Ok, I've been on two 7 night DCL cruises and one 3 night DCL cruise, so I shouldn't have to ask this question. But, I got an e-mail from the DCL reminding me of our upcoming Alaskan cruise (May 3) saying this for dinner attire:

"Nice dining attire (no jeans or shorts at dinner, please)
Optional formal attire"
So, does this mean we don't have to pack suits and dresses? Can we get away with slacks and nice shirts/blouses? That would be awesome!

Past cruises it seemed more a a requirement that we had to dress for formal nights. Are they loosening this on future cruises?