Don't apologize! I am here to help as much as I can through my planning process - and I hope once you go or hear back from when your parents go, you share your thoughts.
We went with La Mansion (formally known as Garza Blanca). Not only was I blown away and loved everything about it - its 2 minutes walking distance from the resort Garza Blanca who will work with us on a good rate! Its more than perfect for us! That way my guests (I only want 50 people - so it'll be all CLOSE friends and family) can walk to and from the villa as they choose - no taxis, although taxis are so easy to get! SO even if they don't choose to stay at the resort next door - they won't have a problem.
I hope you get to go there - your decision to have your wedding there will intensify so much! It's such an awesome place!! Where you traveling from?
Casa Tres Vidas is nice - much older but such a cool feel. But for a wedding you have to rent out both the Quinta Maria cortez AND Tres Vidas. The owners makes you do for a wedding. But if your having a small wedding and want all your guests in the same location this is spot! VERY affordable and SO cute! Its like a maze and really, even though you'll be at the same villa, if won't feel like it. I can answer whatever questions you have about this place. Right on the beach, ceremony would be so nice here - this is why I considered it.
Casa Cosmos is SO cute! this was our 3rd choice! Had a very tropical feel. The living area (which is where you'd have to have your reception) is under a huge palapa, definitely gives it a destination feel, very cute! I wanted more of a modern feel - not so tropical so this is why I choose to go elsewhere. No beach access here.