Hi Michelle,
Because the Walt Disney World resort is so family-friendly, there are few places that those younger than 21 are restricted from entry, including most resort lounges and bars.
Your daughter will be more than welcome to join you at the waterside
Laguna Bar, which serves sandwiches, salads and non-alcoholic beverages in addition to a range of signature cocktails, margaritas and sangria.
Laguna even has a kids menu for younger guests.
We love the food choices at a number of the resort lounges and often visit with our daughters for a small meal, with or without a libation. The lounge menus offer a nice change of pace from quick service dining.
Wishing you a wonderful time with your daughter throughout your visit. Enjoy!
Wilma