In the cruise industry of 2026, the "single supplement"—a fee that traditionally forced solo travelers to pay double to occupy a double room—is being phased out by several forward-thinking lines. Norwegian Cruise Line (NCL) is the industry leader, having recently expanded its "Studio" cabin category across its entire fleet; these rooms are specifically designed for one person and include access to a private solo lounge. Royal Caribbean and Celebrity Cruises also offer dedicated solo cabins on their newer "Quantum" and "Edge" class ships, which carry no supplement. For a more luxury-oriented experience, Virgin Voyages provides "Insider" and "Sea View" solo cabins with zero extra fees. Additionally, smaller lines like Saga and Fred. Olsen frequently offer "no single supplement" promotions on specific sailings. In the ultra-luxury segment, Silversea and Regent Seven Seas often reduce supplements to 0% or 25% during off-peak seasons, making solo luxury more accessible than ever before.