Help! Free tux for the groom???

I'm in need of some last minute advice and am hoping you can help!

Paul, my dad & our BM rented their tuxes from a Flowerama shop in Bayside. Our BIL & his son rented tuxes from a Flowerama on LI. So that's 5 tuxes - how many tuxes do you have to rent before the grooms is free? And does renting them from 2 differnt branches help?

We hadn't thought of it but our SIL suggested we might be entitled to Paul's tails as a comp. Hey - every $145 counts! : )