If you purchase a "Fiver" package, do you pick up your other tickets at the time that you visit the Aquarium?

You get them in your email and use the same tickets for each attraction.

Yes.. One ticket gets you in all five events

Once you get your tickets you scan it at the difference events

We purchased online and it was all on the phone, the kids did get there separate tickets I think from the aquarium for the other fun things.

Not sure about that package but we picked up our tickets when we arrived.