“If you want loyalty, buy a dog,” said South African professional speaker Michael Jackson, who travels extensively and logs about 120 nights per year for business and another dozen for personal stays. “There isn’t a hotel group I feel strongly enough about in a world of competitive products, rates and special offers.”But old sayings aside, plenty of frequent travelers do feel a sense of loyalty to particular brands, in large part due to the perks they earn from rewards programs.Mike Borzumate....