My husband decided to book a Grand Suite for a Thanksgiving cruise. I understand that this comes with some kind of Concierge Lounge and service. Can anyone clue me in to what this really means?

The concierge lounges vary by ship. Which ship will you be on?

Linda Coffman
Author, Fodor's The Complete Guide to Caribbean Cruises

The perks of the lounges do not vary but not all ships have the, Freedom/Voyager/Radiance class do as does Enchantment.

Continental breakfast, service of the concierge for dinner resys, etc, happy hour (adults over 21 only) 5:30-8:30 in the evenings, with light snacks. freshly ground coffee, and a nice place to avoid the crowds.

How silly not to give the ship! It is The Jewel of the Seas. Not the newest of ships but I have heard good things overall!
Also, is the Happy Hour a real bar as my husband would say or just a beer and wine kind of thing?

Beautiful ship with a good concierge. We were aboard in December.

Full bar with call brand drinks, not top shelf however. And it became quite crowded pre-dinner. We generally opted to pay for a decent glass of wine (their frees stuff is rock gut) and our Grey Goose martinis

Have dinner at least once at Portofino. We had 4 dinners there and two at Chops, preferring the food and service over the dining room.