I had a lot of misconceptions on our first trip. Although I wanted to go all my life- I didn't do any reading about it online/etc. before we went and it was spur of the moment. I didn't even find this board until AFTER we went. Here's my misconceptions:
1.) that staying offsite was the same as staying onsite- just cheaper. HA, for us it's not the same and not worth the lower cost- we only stay onsite now!
2.) that when we drove and parked we'd be going straight in to Magic Kingdom.. surprise, you're just at TTC and not there yet..... LOL
3.) that our trip was a once in a lifetime trip- mostly because of cost. I thought it was incredibly expensive to go- good thing I found this board and found out otherwise. I started planning our next trip the day we got back (and went back on a solo trip less than a month later) but we go a WHOLE lot cheaper thanks to the tips and advice on this board!
4.) that we could do everything at all the parks at WDW in 4 days and US/IOA in 3 days (our first trip). HA... not hardly.
5.) our first (very uninformed) trip we didn't know that they had transportation from park to park- we thought we had to go to our vehicle and drive from park to park. LOL
6.) oh yeah, the biggest misconception was our first day at WDW- which we scheduled to be MK on Christmas morning. The misconception was that if we hurried and got there at opening that "many" others would probably be spending time with family and opening presents and such and it wouldn't be as busy the first few hours. HAHAHAHA ohmy were we wrong...
I'm sure there are other misconceptions we had but that's all I can think of right now. LOL