I am getting married at riu palace (next door to the santa fe) in May. I experienced the same confusion when started making my plans.....this is my current understanding....the reception included in the Caprice package is not considered 'private' meaning that if you have the reception at one of the restaurants, other guests who are staying at the hotel may also be in the same dinning area. However I am having my wedding on the terrace at the mexican restaurant and it has a 70 person capacity, and my guest numbers are similar to yours...meaning that there will likely be no guests that want to sit out on the terrace and be the hanging around the reception area. So basically from understanding the extra costs only come into to place if you want to make the reception a private event. Does that make sense? Let me know if you have anymore questions....I can share what I know so far!!! Also just a warning, it seems like the Riu likes to tac on a lot of extra charges...so be careful!