One of the best parts of an all-inclusive hotel stay is the breakfast. Often, it's a buffet, so you should get your money's worth. One way to do this is to use bigger cups so that you can pour more of the drink of your choice. Most continental breakfasts include a selection of orange juice, apple juice, and milk. So, bring larger cups with you so you can take your fill.
Take your cup back to your room or empty it into a reusable bottle if you're on the go. It will save you from buying drinks if you're out and about in the morning.