I often disregard loyalty benefits as being good incentives because I feel like the companies that offer them are simply creating a way to keep you from looking elsewhere before booking with them. In the case of frequent flier programs, I often assume I can get a better deal if I do my legwork rather than sticking to one airline that might offer some perks after some number of flights. That won’t stop me from getting frequent flier accounts with all of them in the chance that I book with them again in the future, but I don’t personally fly often enough for it to matter. Las Vegas is a different story however. It’s usually pretty easy to get a room upgrade, some meal comps, a discount or maybe some free show tickets, but rarely can you find all of them together. But be a loyal customer and you just might.