Just had my wedding last weekend, and despite the abnormal amount of guest (80) for a chapel like this, everything went very well.
I was impressed with how our wedding coordinator (Courtney) handled everything from the first day we met with her, up until after the wedding. All of the staff, from planners to the limo drivers, are professional and friendly. I even tipped them a little more than the "suggested" amounts.
I definitely recommend this place to anyone wanting to get married in Vegas. You usually can't expect too much out of a Vegas wedding, since marriage is a business in that town, but Chapel of the Flowers helped make my wedding feel intimate and exclusive, even though there were 52 other weddings being held that same day!
Overall, the process was seamless and I'm definitely glad we chose it.