Age and kids policy — what families need to know

Hyatt Regency Mission Bay Spa and Marina is an all-ages, family-friendly resort that welcomes children of all ages and offers three heated lagoon-style pools, waterslides and a dedicated children’s pool. The reservation holder must be at least 18 to check in (some third-party sellers list 21 as the minimum to stay without an adult), and the property is not an all-inclusive — meals and drinks are extra.
In this guide
Who the policy covers
Hyatt Regency Mission Bay Spa and Marina markets itself as a family-friendly resort and accepts guests of all ages. Booking sites and the hotel both describe on-site children’s facilities and family programming.
The reservation holder (the person who booked) must be at least 18 years old at check-in and present matching government-issued photo ID plus a credit card. A third-party reseller lists a minimum age of 21 to stay without an accompanying adult; that is a separate third-party condition and not the hotel’s own stated minimum.
- Reservation holder age: 18+ with matching photo ID and credit card (hotel policy).
- Some third-party sellers require 21+ to stay unaccompanied (third-party rule — verify with your booking source).
- Children of all ages are welcome; children 18 and over are charged as adults per booking sites.
| Category | Policy |
|---|---|
| Reservation-holder minimum age | 18+ (hotel requirement) |
| Minimum to stay without adult (third-party listing) | Some sellers list 21+ (verify) |
| Children | All ages welcome; 18+ charged as adult |
Pools, waterslides and kids’ areas
The resort has three heated, lagoon-style outdoor pools, multiple waterslides, a hot tub and a separate children's pool area. Pools are open daily from 8:00 AM to 8:00 PM according to the hotel's site.
Waterslide rules are enforced for safety — the two larger slides have a height minimum, and a smaller slide is available for little kids. Day-pass resellers also sell pool access to non-guests under specific terms.
- Pool hours: 8:00 AM–8:00 PM (hotel official hours).
- Waterslide hours (third-party listing): may operate weekends roughly 11:00 AM–6:00 PM (verify current schedule with the hotel).
- Height minimum for the two larger slides: 42 inches; a shorter slide is available for smaller children.
- Children are welcome in the pools; a separate children’s pool area is provided.
| Feature | What to expect |
|---|---|
| Main pools | Three heated lagoon-style pools; hot tub |
| Waterslides | Two larger slides (42" minimum) + a smaller slide for younger children |
| Children’s pool | Separate shallow area for small kids |

Check-in, room occupancy and family room types
Check-in begins at 4:00 PM and check-out is by 11:00 AM. Early arrivals are not guaranteed a room before the official check-in time.
Rooms and suites list bedding options; several room types work for families depending on group size or need for sofa beds.
- Room (beds: 1 King Bed or 2 Queen Beds)
- Room, Balcony (1 King Bed or 2 Queen Beds)
- Room, Ocean View / Room, Ocean View (Shower) / Room, Ocean View (Bathtub) — rooms with ocean views (sizes vary)
- Suite, with Sofa bed (Marina) (1 King Bed and 1 Double Sofa Bed) — useful for families who need a sofa bed
- Suite (Marina) (2 Queen Beds) and the various corner suites offer larger footprints for families
| Room name (exact) | Typical bedding |
|---|---|
| Room | 1 King Bed or 2 Queen Beds |
| Suite, with Sofa bed (Marina) | 1 King Bed and 1 Double Sofa Bed |
| Suite (Marina) | 2 Queen Beds |

Dining and meal coverage
Hyatt Regency Mission Bay Spa and Marina is not an all-inclusive property; nightly rates do not include meals or drinks. The resort offers several on-site dining outlets for families at different price points.
Options range from the signature Red Marlin Restaurant & Terrace (breakfast and dinner) to the casual poolside Pelican's on the Bay and Market Mission Bay coffee and pastry shop.
- Red Marlin Restaurant & Terrace — breakfast and dinner (hotel lists morning and evening hours).
- Red Marlin Bar & Lounge — evening cocktails.
- Pelican's on the Bay — poolside grill and casual bites (hours vary by day).
- Market Mission Bay — Starbucks coffee, pastries and grab-and-go paninis (morning to early afternoon hours).
| Venue | Type / Typical hours |
|---|---|
| Red Marlin Restaurant & Terrace | Breakfast & Dinner (hotel hours listed on site) |
| Pelican's on the Bay | Poolside grill — casual lunch to evening (hours vary) |
| Market Mission Bay | Coffee, pastries, paninis — morning to early afternoon |
Marina activities, day passes and safety notes
The hotel sits on Mission Bay with a full-service marina adjacent to the property. Water activities available through the marina partner include jet-skiing, sailing, kayaking, sportfishing and whale-watching excursions.
Non-guests can buy a day pass (ResortPass listings) to access pools and waterslides; those day-pass bookings often require the purchaser to be 18 and a valid credit card at the front desk. Day-pass rules (no outside food, hours) come from the day-pass provider and can change.
- Marina activities arranged through an on-site partner — rentals and excursions depart from the dock next to the hotel.
- Whale-watching tours depart nearby on Quivira Road; gray- and blue-whale seasons are noted regionally (December–April for gray whales, June–October for blue whales).
- ResortPass day pass example: pool access, waterslides and pool hours listed; purchaser often must be 18 to book and present ID/credit card.
| Activity | How to book |
|---|---|
| Jet-ski / kayak / paddleboard | Booked through the on-site marina partner |
| Whale-watching / sportfishing | Public departures from nearby Quivira Road docks; book with local operator |
| Day pass for pools | Sold by third-party providers (ResortPass) — verify age and ID requirements |

Pets, spa and extra charges to know
The hotel is pet-friendly for dogs; Hyatt’s policy lists a non-refundable fee of $100 for 1–6 nights or $200 for 7–30 nights, with an individual pet weight limit of 50 lbs, a combined two-pet limit of 75 lbs, and up to two pets per room. Service animals are exempt from the pet fees and rules.
There is a mandatory daily resort fee per room (the hotel lists $46.00 per night subject to change) that supports pool and fitness access, Wi‑Fi and other listed inclusions. Spa treatments at the Wellness Lounge Day Spa are available by appointment and are billed separately.
- Pet fees: $100 (1–6 nights) or $200 (7–30 nights) — dogs only; weight limits apply; service animals exempt.
- Resort fee: mandatory daily fee (hotel lists $46.00; subject to change) with specified inclusions.
- Spa: Wellness Lounge Day Spa on property — book treatments by appointment; spa services and classes are extra.
- Parking: self-parking and valet are charged separately (rates vary by date/source).
| Charge | Notes |
|---|---|
| Resort fee | $46.00 per room listed on hotel site (subject to change) |
| Pet fee | $100 (1–6 nights) / $200 (7–30 nights); dogs only; service animals exempt |
| Spa treatments | Available by appointment; additional cost |

