Im sorry if this is the most stupid question you have ever seen,but entering my first comp and just checking do we need to send a SAE on every entry we make.
Its always best to send one occasionally, we keep a stock of those we dont use and then we can always drag it out if you forget something, qualify for something etc.
The centre where I sort the dressage has had just about everything left behind at some point - music tapes, pikeur tail coat.
Some people dont even put their contact details on their entry forms and its a nightmare if a class is cancelled, or a special championship qualification available.