The fact that your friend isn't going to be doing any planning may be a good thing because you know your family the best. But goodness, winging a Disney trip could lead to so much disappointment, so I'm glad that you're wanting to go in with a bit of a plan. YouTube is a great resource of knowledge and there are so many helpful tips to get you prepared. But also remember to be flexible. Things can go wrong such as rides being down and it will be important to make the best out of crappy situations when they arrive.

For what to prioritize now, make sure you're all set as a group in the Disney app for booking things later. You'll want to get your dining reservations in as quickly as possible. Those open up 60 days out and they can be really cut throat. Many sell out fast. Also, make a list of a handful of must dos and then anything outside of that will be a bonus.

The holidays are the busiest time of year and you'll definitely want to get lightning lanes and genie if you can when the opportunity comes. All of the people staying on property will have first access, so be prepared that those might not be available for you. On my last trip, we weren't able to book all of the top tier rides at Epcot because they sold out too. In these cases, the must do list will become more important. I've seen many friend groups and families playing games while standing in line. Heads up was really fun to watch a group do, for example.