People planning conventions and vacations look at things like availability of hotel rooms and restaurants to the area they're visiting. Having 50 restaurants and no hotels doesn't make for a good convention area. Having 50 hotels and no restaurants doesn't make for a good recreational area. Cities balance them to meet the qualifications people are looking at when making their decisions. Conventions and tourism are big money, not only to the city itself but to the businesses in those convention and entertainment areas.