Spring Break travel with injury?

My 10yo son fractured his lower leg (tibia) last night while skiing. He will be in a boot and crutches for 8wks and can’t put any weight on it for at least 3wks. We are supposed to go to Punta Mita in 4wks. Dr said he might be able to swim by then but I imagine the beach will be tricky. He’s an active kid and I’m not sure lounging by the pool will be much fun for him (or his 2 other siblings who he keeps entertained). Should we cancel? Has anyone ever pulled off a fun trip under these circumstances? We were all really looking forward to this trip!