I took my kids when they were 4 and 6. DH couldn't go. We had a blast! It was just what we wanted, didn't have to worry about what DH wanted. We took a full size single stroller - one evening the kids went tandem and shared it - it was fun. I walked a lot. We had gotten a great price on an AP rate at the AKL (129/nt) so I couldn't resist. Did no sit down meals - just had fun. I felt so safe (of course you can't be stupid, but it was great).
I think if you're staying on Disney property you'll have such a great time. In my humble opinion, you may have a better time! Since then, every other trip excludes DH and we have fun!!!
We didn't rent a car - took a transportation company. Did the grocery stop. Planned a lot. Just had fun.
Last Aug, took Ds (then 9) and DD (7) with friend, and her 4 boys, (9, 7, and twin5's). Such fun. If you're a SAHM anyway, it's much better than being at home.
Sorry - just read rides. Most fit mom and 2 small kids. No problem for us - I steered while they shot for Buzz Lightyear. If something was disagreeable, we just skipped it. It worked out very well!