These are not in Cancun, but south. Dreams Tulum has a small wedding chappel and does Catholic Ceremonies, but is quite a ways from Cancun. The Grand Palladium Resorts in Riviera Maya have a new Chappel, that does Catholic Weddings, bigger than Dreams Tulum, and it is very open as in the sides are almost nonexsistent, but I don't think it has an ocean view. Main Wedding Page. At the top of that page there's a view the new chappel link. If you can't get the link to work google Palladium Addicts - and you should find the site. I know of NO locations where you can have a catholic ceremony outdoors.