A vacation is not a vacation unless everybody is allowed to relax.

The irony about deciding to go on holiday is that it usually takes a lot of planning. Managing the vacation itinerary so that everything goes smoothly and everybody involved is able to do the kind of thing they want is something that takes real skill and consideration. At the very least, a vacationer wants to feel like the people they are spending time with enjoy their company and appreciate their wishes. It is the bare minimum to expect.

This is not how it always pans out, especially if kids join in on the vacation. Childcare needs do not go away just because parents are somewhere different, and it may be the case that they want a little child free time now and then. If this is what they want, it is their responsibility to plan this properly. Simply expecting that a spare friend or relative will be happy to pick up the slack is entitled to say the least. While many will happily offer the occasional babysitting shift, it is their holiday as well. They are allowed to expect some time to enjoy themselves without worrying about children.