I have some who like doing things like hiking, kayaking and being at the beach. I haven't always been able to do these things when they wanted but I would reassure them that we would go to the beach or kayak on a particular day. They would wait patiently and then we would go. I explained to them that we also have to work, food shop and do other things in order to live. They appreciated the explanation, although they were not always pleased that they had to wait, but they did. It has worked this way for a very long time. And I am grateful to them for understanding.