JoAnn, Marc is right about the 100% single supplement for excursions, singles pay twice for those with 100% single supplement. Air is adjusted, and singles are not paying twice for port charges. Been there done that many times. It's discouraging to pay for what you don't use even at their bargain rate 50% supplements over what couples pay.
Seabourn and Silversea also have stiff single supps, no doubt about it, but then they have some that are better than the now "bottom" 50% Regent is charging even on special. At least they used to when I really looked. I hope Regent changes this policy. Funny that just last year, they were offering 30% single supps on some pretty attractive cruises. Perhaps they are doing so well, they might not have to!
There are not many of us on this board who need to worry about this. But Regent (or the powers that be at Apollo and Prestige) need to know how badly it feels to those of us who have been long time cruisers on this line, giving them our loyalty and business when times were different, to see a 60% increase in fares in the space of a year. I hardly think this is a Mark Conroy idea. Just doesn't sound like his MO to me.