We ended up deciding to go with the ballroom because there was no telling what the weather was going to do---plus it was hotter than hell and even in the AC in the ballroom we were sweating buckets. We booked two places actually and told the WC that we would choose when we arrived.
As far as the decor package....we chose the cheapest package and the centerpieces turned out great. Everyone complimented them. It was a tall vase with fake orchids in water and a few floating candles on top. They really were illuminated and looked nice with my pink and orange theme.