Hey there Roxanne,
Welcome to planDisney and thank you so much for your question!
I absolutely love
Star Wars: Galaxy's Edge and have made some magical memories there with my family (including our two little ones!).
I can confirm that Guests of all ages are allowed into
Oga's Cantina. In fact, one of my favorite videos is of my son dancing to the music inside Oga's Cantina when he was just two years old!
There are some delicious adult beverage options (my favorite is the
Fuzzy Tauntaun) but there are also some great snacks and beverages without alcohol as well. My son's favorite is the Hyperdrive (Punch It!) drink. It's one of my family's favorite stops when visiting a galaxy far, far away.
In my experience, it has been difficult to reserve dining prior to our visits since it is so popular, but typically we have a lot more luck joining the
mobile dining walk-up list on the day that we'd like to visit.
Additionally, another fun activity to do with little ones is
Droid Depot! We finally did that with our little ones on our most recent visit and they had a blast.
Thanks again for your question, Roxanne! I hope you have an out-of-this-world visit to the Happiest Place on Earth.
Have a Magical Day,
Greg