They have 4 games in each Bingo session over that 1 hr. They keep track of which bingo cards/electronic cards they've sold for that session, so they can double check the winning numbers. The paper cards have the 4 pages (6 bingo cards/page) stapled together. You use 1 page/game.
We played on our 8/18 Magic cruise for the first time using the family pack of 2 electronic, 2 paper packs--DH won 2 of the 4 games, once with a paper pack, once with an electronic. (DD20 had 1 of the electronic, I had a paper pack.) Lol, I don't know exactly what happened when he won...I'd just come from the mojito tasting so I was a 'bit' tipsy--I don't recommend doing that as I was having trouble keeping up with the numbers!