I can't see a "travellng convention" as actually working very well. When we went to the Arizona convention, it seemed like all I did was drive between Phoenix and Tucson! I do like the idea of having one club doing the convention and nearby clubs having open houses for visiting "to or from" the convention site.
I know our members enjoyed being part of your convention last year. We got many visitors from all over!
Garden Railroad IS fun, it really IS!