Regent bills itself as the most all-inclusive line at sea, and the math backs it up: fares already fold in unlimited shore excursions, all your dining and drinks, gratuities, Wi-Fi, and flights on most itineraries — so up to 35% off comes off a number that already covers the extras other lines bill separately. The anniversary collection spans 35 select 2027 sailings, 7 to 24 nights, across Northern Europe, the Mediterranean, Asia, and North America, on six ships including the brand-new Seven Seas Prestige. Every booking also adds a $350 onboard credit per suite. Book by August 31.

Regent is where I send clients who never want to think about their wallet once they're aboard — no excursion-desk math, no bar tabs, no surprise gratuities. Thirty-five percent off an already all-in fare is genuinely rare for this line, and anniversary sailings on a brand-new ship like the Prestige will book up first. I'd lock a suite before the August 31 deadline.