Not sure if I missed all response to the excursion credit; sorry if this has been answered. Last year my husband, myself & our son were on a Bermuda & Bar Harbor cruise on one of the jewel class ships out of Boston. My husband was the leaf person on the reservation w/ the excursion credit. We didn't book anything ahead of time & my husband & I just wanted to relax w/no excursion. My son wanted to do an excursion in each port. I thought he wouldn't be given the discount but when my husband signed my sone up for the excursions while on board the staff said it was no problem to put the discount against our son's excursions & they deducted the $50 for each.