mbhw,
You don't need to secure anything on the inside unless you were talking about a courtesy call to the store mgr. to OK having the meet. That's what I did, last year, & the mgr. was happy to have us.
There is plenty of room on the east side of the building, in the parking lot. They don't have a "meeting room" that could be used, by us. But, that's OK as it's nice just to stand around the trucks & talk. People with common interests can "pair-off" & do their thing, so to speak.
I'm really looking forward to going.
Joe F. (Buffalo)