Hello Becky,
I've witnessed and arranged marriage in mauritius. and Every time there is something which is very important . WHat type of settings you want . Of course there are these pictures that you can look on the internet. Or what you can do is think about an unformal one.
Statistically most people prefer to have their wedding in hotels , as it is hassle free and you get lots of freebies like dinner cake etc.
Now take your time and choose , preferably start inquiring with your travel agency or the hotel you want to get the maximum advantages on your side
If you need anything feel free to ask