Not sure of the Cantina's capacity but we went directly to the line for it when our time slot opened and we waited MAYBE 30 minutes even though they quoted us an hour wait time. They limit you to a 45 minute slot if you have a communal booth, but if you're at the bar or one of the standing tables they didn't limit you time-wise. It was a two drink limit, but the drinks were fairly strong. ($15-$19 for alcoholic. Not sure about the majority of the prices for the non-alcoholic drinks as I didn't buy any, but there is a souvenir non-alcoholic drink for $32 that I won't spoil.) I was able to get on Smugglers twice and probably could have gone on it more than that, but after our second time they had let the next time slot in. I waited maybe 15 minutes when it was a "30 minute" wait time and walked on when it was a "15 minute" wait time.
I can't say much because I don't want to get my friend in trouble, since she was gracious enough to take me with her. But absolutely try the Fuzzy Tauntaun. It's an experience.