When we went, I found it was not much more to get two rooms at POP instead of a moderate resort. My boys were 9 and 7 at the time. Honestly, I would rather stay home than stay in one room that small for a week. If you can afford two rooms, do it. Myself-I would wait until I had the money for two rooms. They were very accomodating with the connecting rooms. And two bathrooms!!!
We went to another resort for three nights a month or so ago and ended up in one room with two double beds and it was about the size of the POP rooms. I was so frazzled and crowded and cranky. For me, that is not the kind of vacation I want. This is the same reason I have not taken my kids on a cruise yet. The staterooms are just too small. When they are old enough to have their own stateroom, I will consider it again.
That is just my opinion. It is doable, especially considering how little time you spend in the rooms. But I will never do it agian.