Would it help to call the hotel ahead?

My daughter and I are headed to Vegas next Sunday and staying in a balcony studio at the Cosmopolitan. This is a special trip for us; my husband passed away unexpectedly last year on Dec 12. December was a horrible month for us and we want to create better memories this December, while remembering my husband and her father with all the love we have and feel and leaving the devastation of last December behind us. I was wondering if it was a good idea to call the hotel ahead of time to make sure we get the nicest view possible......I've read some reviews of the studios that face walls and you can't see the strip. Would hotel be accommodating if I called ahead of time, rather than waiting until we get there?