Phoenixflier,
I have been on over 100 rallies over the years and always found them most enjoyable. We originally started rallying so that the three children had a different group of friends to mix with and the adults we met also shared the same interests as us, such as cycling and walking.
The only downside I can think of, is the fact that sometimes they can take place at the same area/site of the previous year.
We have always found our fellow ralliers friendly and sociable, but other forum members may have different views.
Don't be put off by other peoples experiences, as we all have different opinions.
I sincerely hope you enjoy your first rally and take the plunge on joining your local centre, whether it be CMHC or C & CC
Kind regards,
Martin