Even if your local group doesn't focus on your favourite things to learn, the SCA can still be a great excuse to travel to learn cool things. Most Kingdoms have weekend long events dedicated to just classes, and even the big inter-Kingdom "Wars" usually have so many classes available to take that it can be hard to notice there is fighting going on if you are busy with them. (And, of course, if you are interested in something that isn't being done locally and learn to do it there are likely people who would be delighted to have you teach them...)