I've vacationed in Puerto Vallarta since 1997, LOVE IT!!!
There's an awesome place that looks over the pacific ocean called Le Kliffe. Great food too.
Can't beat the view at sunset. They can handle from start to finish. I know they have a place for the bride to get ready, so you don't have to cram the dress in the car and make the journey, showing up wrinkled.
Not sure if you are looking to all stay in one location, but looking around Mexico, PVR villas are very reasonable.
We have friends that own a little restaurant called No Way Jose. It's small, but the food is to die for. The BEST tableside caesar salad in all of PVR. Julie is one of the owners, has awesome hook ups for the bakery too. http://nowayjosemx.com/
Another fab place to eat is Cafe Des Artists. Gourmet 5 star dining. Beautiful location. The tasting menu was to die for. This isn't what you think of when you think dining in Mexico...this is truly gourmet 5 star dining with excellent service.
And of course, if you are looking for way casual tasty pizza? I can't forget Senor Fox at Cafe Roma pizza.
For a wedding planner there? I'd contact Julie from No Way Jose and ask her opinion. She's from the midwest, but now lives in pvr full time. (lucky woman!)