You have to watch your folio like a hawk! One time I maxed out on my Cheers, but didn't realize until I tried to get a drink at midnight and the bartender let me know I already had 15. So I asked for a diet coke instead. The next day I was denied drink #15 bc I was told that I was already at #15 bc they had counted the diet coke from midnight-ish. First, Cheers resets at 6am, so even if it was rung up as alcohol, I only had 14 drinks after 6am. And second, it was soda, and not sure how they could have messed that up and rung it up as alcohol when they clearly said I couldn't have it. This was before I realized I could track my drinks in the app.
So fast forward to my next cruise, and I was on the lookout! We go to brunch in the MDR, and I order a beer. They brought me a mimosa, which I don't like, so I sent it back and asked for my beer. They bring me a beer. Cool. I check my folio and I was charged for 2 alcoholic drinks! I ordered another beer, and i told them they charged me for 2 drinks for one beer. They said they would fix it. I checked my folio again and I was up to 4 drinks! For 2 beers. So I waited until after Brunch and went to customer service to fix it. The line was long af, so I waited until later. FTTF would have been nice in this case. I finally get around to getting to customer/guest services to explain what happened, and that I was just trying to make sure there were no mix-ups like my last cruise. They took off the 2 extra drinks, thank goodness.
Moral of the story is you always have to check your folio. We shouldn't have to check it so often, but unfortunately it's necessary.