I have tried putting myself in the situation my child is coming to visit.
First off I would be so thrilled, any prior plans I had would be cancelled. However, the father knew Dylan was coming, so why make other plans, at least until after whatever Dylan had planned to do and had been taken care of. If his plans changed adapt, better yet more time to visit. I would be looking forward to having breakfast together and at least having the time to spend with Dylan until it had been time to see his friends. I would be there, even if he wanted to sleep in. There is nothing that cannot be done later, even an attorney appointment can be cancelled and re-scheduled. Also if Dylan wanted to sleep in, that would be a big plus, he wouldn't be taking off so early and for more time together.
That is just me tho!