The remedy for this sad departure feeling is to have a subsequent trip in the works before ever "concluding a visit." Then when you hear those word, it's your cue to turn to your family and say "We must carve out some time this week to plan our next trip so I can get the resort reservations made." It's also helpful to create a list of things you didn't do on this trip so you can prioritize those attractions for the next trip. Trust me, it's empowering.