I would ask.... I've been to the Georgia aquarium SO many times, and as strict as they are about things, I'm so surprised they let a big daddy in there..... much less a Bouncer with a drill!
But yes, I would definitely ask. I just did a Booker Dewitt photoshoot in Florida, and we found a dock and a lighthouse, so that worked REALLY well, and they let me bring my skyhook and my mauser replica. I even went to some old buildings with the mauser, and no one cared.... So if they are nice like you said, they should have no problem with you doing a photoshoot like that.