My parents live 3 hours away (used to be an hour away until they retired to the coast). They're in their 60s and are moany, bitter and miserable much of the time. They expect me to visit regularly in the summer - they seem to think it's a holiday for me because they live near the sea. But it's hard work staying there for a few days to be honest!
It costs me over £250 every time I visit for a weekend. Petrol is £100, they expect me to take them out for a meal when I come up as a "thanks for having me" gesture. And at home they don't eat much, just sandwiches really. So I usually do a little shop for myself before I go, and often end up cooking meals for them too. Aibu to resent this a bit? It's expensive to travel there by train and takes about 6 hours, so not really a cheaper alternative. I can't afford to stay in a hotel or Airbnb every time I visit either as it's a pricey tourist area.