Yeah it sucks. No shame in foam earplugs. Parenting is often over stimulating. I use them in airports, I would definitely also put them in at a play place. You can definitely still hear enough to supervise.

Went to an indoor kid's facility and the noise levels were thundering loud. The facility was large, had an indoor playground, ropes course, ball pit, jumping zone, etc...I was curious if any other parents are bothered by this or if I'm more sensitive to it? It felt like I was hanging out in an airline hangar.