How old are your children? There is so much more to Disney than the headliner attractions.
What parks are you visiting and where are you staying?
My first bit of advice is to consider 3 “must do” rides at each park. Then relax and enjoy the rest, what you get on you get on, what you don’t you don’t. Also, utilize rope drop. Make sure you know the time the park opens, if you’re eligible for early entry and calculate time for transportation etc to be at the head of the pack.
Think about shows, parades, and the fun and magic of less talked about yet beloved attractions (People Mover, Tiki Room at MK to make a few) look for hidden pascals in MK, find the kidcot stations at Epcot, and try some snacks from different countries). Look for hidden mickeys. Get silly with the characters and take lots of pictures. Your kids likely will find joy and excitement in unexpected places - savor this!
Yes, some of your lines will be long. Bring snacks, think of some fun games to play while in long and ways to entertain kids. Don’t push your kids beyond their limits. That’s not fun for anyone.
Good luck. Find the magic. Enjoy it.