Long story short: My parents spend 2 months at a Thailand resort every year. I am mid-50's and have 2 adult brothers. We all have families.
Although my parents are older, they are both in great physical and mental health.
Every year before they leave for their trip, they say, "don't call us- we will call you." They always call once. They just got back, and this time they did not call anyone even once. We did communicate more regularly by text (brief texts.)
My question is what do you think is an acceptable level of communication in this situation?