Newyorkbride

Hi. I'm new to this website and am considering a villa wedding in puerta vallarta in 2013. Can anyone provide insight as to how hot or rainy it can be in May or September? Our preference, based on reviewing websites, is Casa China Blanca. Does anyone have information on what they charge for an event fee if you plan to stay there as well? Also estimated budget for food/alcohol/rentals per person? Thanks!