My sister in law got married at Akumal - they loved it. I wasn't able to go (too costly at the time), but they went back a year later just because they loved the resort so much and are going again!
I went to this resort about 5 years ago and stayed on the Tulum side, and it was definitely one of my favourite places. I found it a great location to go off resort too, to see some local thing and check out Playa Del Carmen. I highly recommend a day trip to Xel Ha if you can! I bought the all inclusive day pass - includes food and drinks.
I'm also doing a wedding in Nov 2014, I just don't know where or when yet. I'm mostly basing it on price quotes I'm getting back.