chachacha:
I always travel as a single and enjoy that status! It's true, though, that I also try to avoid excessive surcharges for being a single.
Most cruises will charge a single at least 150% of the quoted per-person-double-occupancy rate. I figure that that works for me, because if I were still married [my late wife died some 11 years ago] I'd have to pay 200%!
I'm always open to suggestions for cruises, as that is my favorite way to travel. However, I adamantly stick with only a couple of lines.
SWR