TChrist05..........I was on DCL's web site (my in-laws are thinking of joining us) and yes 6,7 and 8' are unavailable. I used my "upgrage coupon" for this cruise also. Plus my 50% off voucher and the upgade stated "you are entitled to one free upgrade up to a cat. 6. Maybe they'll upgrade me to a cat. 5 and give to my cat. 6. LOL There are 4's and 5's left.