We stayed at POR last Nov. for 6 nights. There were 6 of us in the room. Me, DH, DD15, DS13, DS6, DS2. Since the youngest was only 2 at the time we could stay there.
It was a little tight but since we were only in the room to sleep, it wasn't that bad. DD is the only girl so she ended up sleeping on the trundle. She is about 5'1" and it was a bit small for her but she didn't mind and said she slept fine. The baby slept with DH and I but I wouldn't recommend that. The beds are way to small.
Now that DS is 3, we are staying in 2 rooms at POP.
I would do POR again if we had to (& if we could) but I'm sure we will be more comfortable in 2 rooms. The only reason we stayed there last year is because it was our 1st trip and I REALLY wanted to stay at Riverside (love the theme). I wanted to try it before DS turned 3 so we wouldn't have to spring for 2 rooms (I know I'm a cheapskate).