Hmmm. I"m having our dinner reception on the Cove Terrace, Dulce never mentioned anything to me about an addition charge. Maybe the cove terrace has an elevator.
I decided to go with Del Sol because the quality of their work is so good and their reviews have been wonderful. They are def pricey but If you book a while before your wedding you can make monthly/weekly payments. They set up an online account that you can make payments to when ever you would like.
Good Luck.