11 Royal Caribbean (Diamond)
3 Carnival
2 Celebrity
1 Norwegian
1 Premier (now defunct)
Oddly enough, Norwegian is my current favorite. Sailed on the Jewel earlier this year on a re-po up the west coast and thoroughly enjoyed it. Royal has been disappointing lately. Even though I get good perks, the food quality has seriously declined and the service is just... meh. Zero desire to try Icon... it's just TOO big and looks to be child-centric. I thoroughly enjoyed Celebrity but haven't been on one since 2008 so it might not be as good as I remember. Would love to try Edge or one of her sister ships but it's tough to get away from the convenience of Galveston's 4-hour drive from home. Same goes for Virgin. It's on my to-do list but the mainly-shorter voyages, higher prices and limited departure ports are a tough sell.
So I would say that I'm not really stuck on brand loyalty OR itinerary. I'm more about the experience onboard, which I'm sincerely hoping Princess does better than their customer service ashore!
Anyway... sorry for hijacking this thread.