Do you think these ideas would generate much interest?

ye I think most parents would be looking for horses to lease exactly like yours she seems very sweet and safe, I would charge them about 80-100 a week. I also think that that is a really good idea about the charity ride because it will incourage more people to come to the yard. Get posters advertiseing it and stick them round where horsey people will see them like a tack shop or something and if you are worried that not enough people will come set up a registation that they have to give there name in a few days before the show, so you can figure out roughly how many will come, Hope this helps :)