Regent Seven Seas Cruises offers voyages of exploration and discovery. They sail to all seven continents with 300 ports of call. The luxury vessels are mid-size carrying from only 490 to 700 guests. They offer all-suite accommodations with each stateroom having an ocean view (97% with private balcony). The ambiance on board is upscale but not uptight with an elegant casual dress code. Formal attire is optional on voyages longer than 16 days.