Tartin, It was quite a few years ago that I joined BDS but they didn't even tell me that I needed to send a stamped addressed envelope to my branch in order to receive their events program.
I did not re-new my subscription. Hopefully their communication has improved since, but felt that they were a very cliquey (spelling) bunch, probably more so than BASC.
Hope we get to meet at the CLA (Friday and Saturday). We have friends in Inverness.