I agree Marc.
Can't imagine how Regent will be able to get flights changed so close in either. Maybe they should do a charter flight from Miami direct to Lisbon

!
I also read that people have been told there will be no pre-cruise hotel at Lisbon - don't know if that means there are limited hotels available in general, or if Regent just can't get what they consider a reasonable room guarantee so they are opting to not include it at all.