Hithere I think OP is talking about incidental expenses of outings and treats, not their decision to move.
I agree young families have many expenses but that is no reason why grandparents should be expected to pay for all leisure outings. Many pensioners have very small pensions and when people retire abroad in many countries thy UK government will not give them pension increases once they leave this country. OK if you go to some countires but not all.
People eating and drinking on the go