Evening to benefit The Rig begins with Café Miranda Taco Bar and contra intro workshop, followed by dance featuring Perpetual e-Motion and caller Will Mentor at 7 p.m., at Rockport Opera House, 6 Central St. Cost: $25 including taco bar, intro workshop and dance; $15 dance only. Space limited, advanced reservations encouraged. Tickets at Zoot Coffee and HAV II, Camden; Rock City Café, Rockland; and birthdaybenefit.org. Also $1000 health and wellness raffle; tickets $5, five for $20. All benefits The Rig; Shannon Thompson birthday benefit bash.