When we used our voucher for mini golf, the discount only applied to one of us, and the rest of us paid. It still cost us $39. The man who took the voucher didn't even read it. So if you used two and are party of 5 it would cost you $78 to play twice. Perhaps once at Fantasia and once at Wintersummerland. It's not as if your whole party is free. Disney will still make a profit off of you, I say use them both.