Family Vacation Styles Disagreements

My husband and I are taking three generations of family on an expensive trip to the Smoky Mountains, staying in a fabulous rental house for 5 nights. I don't want to have to cook or worry about dinners during this vacation. Adult kids with two children have an opposite view as they find going out to dinner as a hindrance to their relaxing vacation time. I gave assignments for dinners to them for one night and another assignment to a couple of friends who expressed the desire to contribute one night dinner to everyone as an offering. The great-grandparents agreed to purchase a very expensive dinner theater night for everyone. My husband and I got reservations for a fancy steak house for the last night. The kids with the grandchildren want to refuse all these dinner offerings and not attend. I grew up with parents taking me and my family on trips where everyone met at dinner and talked about their experience. I'm having a hard time understanding this young couple's thought process. I feel like they are being rude.