We had a choice of a pac n play or a regular small crib when we stayed at the Poly. In fact, we tried the pnp first and when my DS didn't like it, we asked for a regular crib instead, which was no problem. The AKL had the pnp already in the closet and we didn't need a regular crib for that trip.
The regular crib was nice and sturdy and very clean. If your DD will sleep away from home in a crib, I think it will be sufficient.
My problem was that DS is almost freakishly attached to his crib. He loves it and willingly goes in it for naps and at bedtime. During the WDW trip at 12 months, he slept fine in the pnp. The trip at 15 months was a completely different story. He hated the pnp but slept so-so in the crib and we ended up having to cosleep, something we don't do at home. I think the WDW crib was great but DS wasn't going to sleep very well unless he was in his own crib.