Ok, I understand that this is going to sound really really off, but please hear me out.
Carnival has a policy in which cruisers must be 21+ yrs old unless there's a 25+ yr old in your party. My girlfriend and I are in an unfortunate situation where we need to go on the Mar 5 Carnival Imagination Cruise to Nasau, Bahamas or we won't go at all. (Me, my school and job; her, school, a summer internship in Germany, and back to school..) I'm 23, but she doesn't turn 21 until July.
What we really need is to find a group that would be willing to let us register as one of their guests/part of their party. Yes, it sounds like a setup, and I understand why there's an almost zero chance of this happening, but we're desperate. I can provide references or anything that would help.