Can I book a Proposal Experience when the attraction is closed and no other guests are around? Unfortunately not. The experience is available every Wednesday at 14.30 and must be booked at least 7 days in advance. Related articles What's included in the Proposal Experience? Do you offer any Animal Feeding Experiences? I purchased photographs at SEA LIFE London Aquarium, how to I redeem my download? Can I buy photographs at SEA LIFE London? Can you use an underwater camera when snorkelling with the sharks?