Well I've returned from the cruise on the Explorer. The public areas are really spectacular - maybe a bit Las Vegas though. We were booked in a G category cabin (second lowest). Frankly the layout was rather awkward. The walkway at the foot of the bed is a bit too narrow, especially for trips to the bathroom at night when some of the duvet may have fallen on the floor. Also, the TV is mounted for viewing only form the bed, doesn't swivel at all so it's nearly impossible to view from the sofa. Bathroom and closet is also a little small, but not really an issue. If I were to book this ship again, I'd book F2 category for a little more since those cabins are much more comfortable with bed facing out with large closet and bathroom (separate tub and shower with dual sinks).

This is different from Regent's other ships, Voyager and Mariner, where all cabins below the penthouse categories are exactly the same.