Has anyone gotten their room assignment, which reflected an upgrade in categories, then paid for an upgrade to a higher category BEFORE getting to the port?
For instance, if one booked a cat 12 gty, was upgraded by DCL to a cat 9, but was considering "buying up" to a cat 6. Would the price be what the tier prices were at the time of booking, and from a cat 9 to a 6, or is there some set formula for upgrading when the cruise is imminent? And would the increase be counted from the upgraded category or the previous category at which you booked?

For instance, if one booked a cat 12 gty, was upgraded by DCL to a cat 9, but was considering "buying up" to a cat 6. Would the price be what the tier prices were at the time of booking, and from a cat 9 to a 6, or is there some set formula for upgrading when the cruise is imminent? And would the increase be counted from the upgraded category or the previous category at which you booked?
