u/Hot-Food-7151

Going on a family trip the beginning of June. My family of 4 all have park tickets. I was gong to wait until the day before / of to by my MIL park tickets. She may not be up to going to the parks every day, it all depends on how she feels, she is almost 70. Her priority for the vacation is to be with her teen granddaughters not so much the parks. We are staying in the resort and my MIL is staying with us. Is it a high probability the parks will sell out, Should I just go ahead and buy her tickets?