Extra week after pop: on site or off site

Hi! Will be at POP from aug20 to 26. We have ph+ and Free DP. We wanted to extend our vacation for a week to enjoy the waterparks but no more room with free DP available at Pop. I made a reservation off site with a kitchenette room but now thinking that cabins at FW will be more fun for our 2 sons. It is more expansive (600$). What do you recommend? Is it worth the extra expanse?

The cabins have full kitchens so you could save on meals. You could look at it like your taking a second vacation by going camping. If I had the extra money spare I would go for it.