There were definitely some moments where my patience was tried (when our room wasn't ready on time, when it took multiple phone calls about our bathroom outlet that wouldn't work, etc), but the flip side of that relaxed attitude is that the whole resort was relaxed and the staff was really laid back about guests getting whatever they needed. We didn't get push-back about any requests--extra food orders, an additional cot in the room so the kids didn't have to share a bed, etc.
I think the resort was actually pretty full when we were there (early January), but it didn't feel crowded at all! Just enough people to make it feel lively. We stayed in a room in the "Level" section, which I'd recommend if only because that opens up a whole other section of the resort. There's another stretch of beach, a second pool & pool bar, a poolside restaurant for breakfast and lunch, etc. Being in the Level rooms also enables you to make reservations at the Rasta Pasta and Nikkei restaurants (it's first come first served otherwise.)
The ropes course ("obstacle course", I think they call it) was definitely cooler than we expected! My 6 and 8 year old boys had a blast, and there was even a more challenging section that they weren't big enough to tackle. The guy running it was also super laid back about giving extra turns on the zipline, etc. It was a much cooler ropes course than the Treehouse World near us.