I accidentally came across Costco Travel brochures. Prospectuses are different, but the information in them is one-sided and strongly correct. Well it can not be such that everything was perfect.
If you want a variety of information, then I recommend looking at the review site for costco travel. There you will find information for all tastes, from positive to negative. My advice to you, use different types of resources to make a personal opinion about the company Costco Travel, otherwise it will get you some one-sided and the sites from which you take the information must be verified.