There are many different types of events. Some are held indoors, some outside, and some can be both.
Festival of the Rose, Winter Arts, Yules, Winter Weekend, Collegium, Coronation etc. – These events tend to be indoors and more party or art centered, less fighting. Sometimes there are feasts or dancing!
The information presented here comes from SCA 101: How to Plan, Play, and Avoid Dismay by THL Anóra Tryggvadóttir