Need advice for family vacation

Hello. We're heading down to the area for the renfest from MN next month and we're wondering if these things were worth exploring. We'll be coming with 2 kids 10 and 12. We're staying at Margaritaville in Conroe.

We were thinking Day 1: at Radio Tave and then the Space center

Day 2: Houston zoo and children's museum (kids may be too old for museum?) then hang out in Herman park

Day 3: Moody gardens, Stewart beach and dinner at Rainforest cafe

Day 4: Ren fest

My questions are, is it worth it to do the zoo and Moody Gardens or should we skip the Childrens museum and just relax at hotel for pool day? Would love any adjustments or feedback. Thank you!