That's normal. Most stores get enough to have single coverage all day on the weekdays and some double coverage on the weekends and possibly some training. Some stores don't even get that. Breaking down a pallet is essential for the workcenter to function, so it's one of the few times that you really need to sacrifice time with guests. I HATE seeing guests waiting in line for a long time, but you won't have drinks to sell them if you can't get the ingredients in. The new organization/labeling that they want us to do will end up saving a lot of time when doing the order, although most stores won't have enough time to set it all up in the first place.
The point is, you have to make time. You won't get much help from the rest of the store because they don't have enough hours to get their own stuff done, let alone help you with stuff they don't even know how to do. It's hard and you will never have enough time to do everything, but you'll get better at it. You can get your team to help with some of it, too.