Super fun...and I'm an adult, travelling on my own for work. You gotta have fun when you can. Advice: arrive right at opening time. No lines. I had the whole place to myself and got to go at my own speed without crowds. If you don't want the picture at the outset, just tell them that. They may say 'You don't have to buy it' but just say no thanks and walk on by. I even managed to get a great selfie in front of a tank where a shark was menacingly over my shoulder.