You bet! Also, by closing the park you can get more money from entrance fees as the park re-fills, and since you have a lot more new coasters, you can charge a higher fee. Of course, CSawyer stopped us from doing that in LL by making some of the scenarios be "free" for the entrance fee.
Frankly, I find it more cost effective to always have the entrance free, that way I can increase the price on the rides and my overall profit is higher.