not sure about the bedrails, but for my last 2 visits at the contemporary, we were actually given a full-size metal crib - much larger than a p-n-p. Most recently was about 10 years ago. For what it's worth my confirmations both times said "crib requested - not full size."
I'm not sure what the day beds are like at the CR, if they are like the ones at the Polynesian be careful about using the bed rails. My ds is 3 and he slept in the day bed with a bed rail and he still fell out of bed with rail and all The mattress is pretty light, so there isn't much weight to hold the rail secure enough.
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