One of the best upgrades some of these travel agents can get for their client is a bump to club or lounge floors, especially in foreign hotels, which means free breakfast, free drinks, free appetizers and desserts, all day long, plus private concierge services and a private sanctuary.

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But they also have exclusive in-house amenities, such as a private lobby desk and concierge staff, with escorted in-room iPad registration, one of the best upgrades you can get in a city where main lobby registration, even at top hotels, often resembles the economy class check-in line at JFK. The 24-hour room service features the first-ever in-room dining menu designed by the man himself, culinary legend Nobu Matsuhisa.

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Club guests have a private check-in desk, access to the Virginia Room for concierge service and dining, and a private terrace and garden.

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If you would prefer to avoid the bumpy drive from Manzanillo, the concierge will send a private plane to fetch you, landing on the grass airstrip at the property.

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Strictly defined, Private Health isn't part of the growing phenomenon known as concierge medicine, where doctors charge a retainer for more face-time and personal attention, and often take their practices off the commercial and government payment grid.

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That means room service delivered from world-renowned restaurants, a private health spa with trainers at the ready and, most importantly, a smiling concierge on call at all hours to accommodate every aspect of their lives.

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And unlike the concierge sundeck - which is reserved for the ship's highest paying customers and lacks access to a private pool - Vibe offers teens a private sundeck, a plunge pool and two hot tubs.

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