Im planning a trip in May. Im planning on buying the tickets on line in advance. Does it let me pick which day I want to schedule my tickets for or how does that work?

Yes. Or you can go to City Pass and there are a bunch of tickets for different places in Tampa Bay for about $100

City pass for $100 works for 9 days. If your in from out of town this is the way to go.

Yes

I agree, also make sure to visit with the penguin.

Yes you can select a day and then print or just redeem tickets there

Yes you can. However, you are not limited to that day.

I'm not sure I was there sub contracting some work at the Aquarium. They wouldn't let me look around or get any free tickets. I asked and they told me no 👎

I bought mine online at the door for that day. You can buy them in advance any day and they are good all business days in the future.

Dolphin Cruise was amazing

Yes you can. We did that and used the confirmation on my cell phone with no problem.