If you think on taking a vacation that requires any sort of wide planning, such as out of the country or worldwide even to a popular destination in a different state, it is probably going to be necessary for you to enlist the services of a travel agency.

Try to find out which travel agency you are considering is helpful with. Agencies with more extensive (think global) affiliations are more likely to be able to get you lower prices and added favors for your vacations. Keep in mind, however, that just because they are affiliated with a large group does not mean that the agency itself has to be bigger. Common knowledge would suggest that the bigger the agency, the easier it is to negotiate lower prices.