J.L.
Hi L.! Yes, there are activities on the weekends! There's a diaper gym at Gymkhana http://www.gymkhanafun.com/schedules.asp and also Music Together classes http://www.creativeyoungspirits.net/classes.htm and http://www.mtfirstnotes.com/scheduleandclassmeetingdates.... all have Saturday classes. Hope that helps!
J.