This coming January will be our first time traveling on Caribbean Air and I was curious as to, what is everyone's opinion of the airline. I've read that they weigh your carry on and if its more than 7kg/16lbs then you have to pay a fee.. Has anyone ever experienced this?? Also we were hoping to upgrade our coach tix to business for the 6hr flight, so do they usually offer upgrades (I know it depends on if they have unsold tix, but some airlines have an option right online and I didn't see anything pertaining to it) and any suggestions on getting one? I'm most concerned about the carry on bc I like to pack two nights worth of cloths, necessities, and valuables (just incase my bag decides to take a different vaca). Thanks!