Yikes! Sorry you're getting stressed out! You definitely won't get to do everything you want to do. So just try to enjoy the things that you do get to do! And everything else... well, there's always your next trip!
We are a party of 5 with 3 1st timers. I haven't been in 20 years so it is basically a first trip for me too . Me-28, DH - 31, DD-5, DS-2, and My mom - Turning 53 while we are in Disney.
We'll be in Disney from 9-27 to 10-3 (the day before DS turns 3) staying at POR. We are doing DDP and MNSSHP on 9-29.
We are doing T Rex on our last night as a early celebration of my sons birthday. I'm more excitied than my kids. I've wanted to go back for years
Thanks for posting your concerns, I'm having the same ones and am learning a lot from your thread.