Maybe my kids are just fussbudgets, but nary a one would sleep in the pack-n-play (home or Disney!) THey would toss and turn and "rustle" around all night (so translate that as MOM didnt sleep well, either!

) We managed with one as best we could when my dd was 8 mos on a trip at WDW, but when we took her at age 2, we used a bed rail (and a brother!) to keep her in bed! Or she ended up with us, which is less than ideal, but we survived. Thankfully now the little lady wants her own sleeping space (which, given her bizarre nighttime contortions, we are happy to oblige.)
I advised my SIL to get a full sized crib when we went to WDW in August (her son was 8 mos at the time). I connected her with ABBF (A Baby's Best Friend) -- a company that rents all sorts of baby stuff to Disney vacationers. The crib was excellent -- easy to put together, and full-sized. We also requested a full-sized one from Disney -- but as soon as we saw it, we knew we were glad we had rented from ABBF. The larger "cribs" at WDW resorts are not guaranteed (FC,FS, can't reserve, only request at check-in) and they are like the white metal ones they use in the hospital. Given that my nephew had already spent 3 weeks in Children's hosptial for 2 heart surgeries, I am certain that the last thing he (or us!) needed was a reminder, so we were all glad to send it back and keep the much kinder, gentler, Disney-bedding clad full sized ABBF crib! I think she paid $75 for the week for the rental. But, as the saying goes, if baby ain't happy, ain't nobody happy, so it was moolah well spent.