Although most cruise reviewers say there are five, there are strictly speaking only two cruise lines that truly have a “ship-within-a-ship”. A fully self-contained world where passengers paying at least $500 per person a night for a suite are given the special entry card to a door that lets them...

Four years ago, Royal Caribbean, best known for huge, good value resort ships, surprised many by buying Silversea known for ultra-luxury small ship cruising. Having cruised on it before the takeover, I decided I should return to see if the online reviews from other pre-takeover cruisers saying...