[Arubalisa]

There is a full page on information regarding weddings (and honeymoons) in Aruba at http://www.aruba.com/SpecializedVacations/Weddings_and_Honeymoons.aspx
A little further than 3/4 of the way down the page there is a listing of wedding planners. I would contact them for pricing. Your question is way to vague for anyone except one of them to give even a ball park price. There are just too many variables: type of ceremony, length of reception, amount of alcohol, food served: hors 'd oeuvres, sit down dinner or buffet. ...

You can also google Aruba weddings and there are many resorts who offer wedding packages and having pricing in their brochures.