I joined TAN several years ago and have yet to use the membership. I felt pressured, they would not show me a blank contract (said the main office wouldn't allow them to generate a blank) and am not happy with the "annual fee" to maintain the account.
They also had European destinations when I joined - tried to use that two years ago and discovered they don't do that anymore. I have no idea if the accomodations are good or not - and am reluctant to burn a week's vacation to find out.
The office in Richardson, TX has since closed - now they are in Ft. Worth. Be cautious.