Noon is hot, but getting married in November it won't be terribly hot. Plus there is a lovely breeze by the ocean.
It's hard to wear shoes and the walk is long. I started in flip flops and quickly kicked them off. They were flopping sand into my dress and onto my legs. It was then sticking because I was hot. No fun.
BBQ Theme dinner is a private buffet dinner by the pool. It's dinner, drinks, and dancing all in one.
For a normal reception you get the restaurant for 2 hours. If you pay to have it private I believe it's the same price as the poolside dinner, if they even let you do it.
Remember that sun sets on the west side of Mexico, so you actually won't see the sunset. It'll be setting over the jungle. Still a great time to take bride and groom photos, but you'll want all of your other images done and over with by that time so people can freshen up before dinner.