Weddings & Celebrations
Atlantis Banquets & Events can accommodate your wedding for 50 to 340 guests in one of nine diverse locations including the modern and beautiful Sea Star Ballroom with sweeping views of the Treasure Cove Resort Marina and Peconic River. The Coliseum Room is another perfect venue located within the Long Island Aquarium, which houses our most captivating and colorful aquatic habitats. Your ceremony can take place outside, in the Riverside Pavilion just on the banks of the river, or in the Grand Foyer of the Sea Star Ballroom, with beautiful marble features and a stunning Chihuly inspired glass chandelier.
Event Spaces
5 Results
Sea Star Ballroom
493 sq m
Capacity
650 Guests
Elevate your event at the Sea Star Ballroom, adjacent to Hyatt Place Long Island/East End, offering breathtaking views of the Treasure Cove Resort & Marina on the Peconic River. Spanning 5,310 square feet, with optional two-room division, and accommodating up to 400 guests for banquets or receptions, 300 for classroom-style setups, or 650 for theater-style arrangements, it's the quintessential venue for any elegant, formal affair.
Coliseum Room
427 sq m
Capacity
320 Guests
Step into the vibrant ambiance of the Coliseum Room at Atlantis Banquet & Events, adjacent to Hyatt Place Long Island/East End, where stunning aquatic tanks create a mesmerizing backdrop for your event. With 4,600 square feet of space and a capacity of up to 290 guests for banquets or receptions, or 320 for theater-style setups, it's the perfect venue for any occasion seeking a unique and memorable atmosphere.
Riverside Pavilion
167 sq m
Capacity
250 Guests
Experience unparalleled beauty at our Riverside Pavilion, situated on the picturesque edge of the Peconic River, offering unmatched views for your special event. With 1,800 square feet of space and a capacity of up to 100 guests for banquets or receptions, or 250 for theater-style setups, it's the perfect choice for wedding ceremonies, enchanting cocktail parties, and any outdoor occasion deserving of an extraordinary backdrop.
Riverfront Room
204 sq m
Capacity
240 Guests
Discover the charm of our Riverfront Room at Atlantis Banquet & Events, conveniently positioned next to the Penguin exhibit, offering a unique ambiance for your event. With 2,200 square feet of flexible space, it comfortably accommodates up to 200 guests for banquets or receptions, or 240 for theater-style arrangements, making it an ideal choice for daytime affairs, birthday celebrations, and vibrant cocktail hours.
Shark Room
353 sq m
Capacity
220 Guests
Dive into an unforgettable experience at the Shark Room, nestled within Atlantis Banquet & Events, adjacent to Hyatt Place Long Island/East End. With its unique décor featuring a giant shark above, complemented by a captivating waterfall backdrop and an unparalleled dance floor, this versatile 3,800 square foot space sets the stage for receptions and special events, accommodating up to 150 guests for banquets or receptions, or 220 for theater-style setups, making it the perfect spot for cocktail hours and memorable celebrations.
Catering
Services
Venue Choices
- Indoor and outdoor options
- Sea Star Ballroom overlooking Peconic River
- 120,000-gallon shark exhibit Shark Dive ceremony
- 650-guest capacity
- Largest space: 5,310 square feet
Dining Options
- Passed hors d’oeuvres
- Cocktail party
- Buffet dinner
- Seated dinner reception
Also Included
- Uniformed valet parking attendants
- Manicured waterfront grounds
- Professionally attired waitstaff
- Coatroom attendant (seasonal)
- Maitre d’ and captain supervision
- Place cards and directional cards/mats
Contact Us
Let’s start the planning process. Contact us for more information or to schedule an appointment.
tony.cotignola@hyatt.comCall Us