We are taking a cruise to Alaska. In Skagway, we are doing two different excursions. My husband, myself and eldest child would get off the ship around 7:30 for the first excursion while my mom (the grandmother) would take my other two kids to the second excursion leaving the ship around 10. We would meet up at the second excursion. These are not Disney excursions but ones we booked ourselves. The question is: Can my mom take the kids off the ship without us or do we need to be there? We have two rooms that are all tied together so she is on our reservation.