I am not sure about the other places but the crab place if I'm not mistaken is by way of reservations only I think you have to do the dinner and the cruise don't quote me on that I'm not 100% sure if you do decide to do it though you will not be disappointed great great great fun!!!
Check their events and opening hours on their website
Because of the crab feast
The Crab Place has been open on Saturdays for the Crab and Cruise at 4:30p from May30th until September 30th. You can give them a call.
Thanks! Your answer is awaiting moderation.