I purchased one day pass for the monorail which operates until 10pm. My voucher does not delivered at all as of 3pm, then I contacted groupon's chat support. Their operator told me it might take another 6hours or so for delivery.
Of course their scam site did not mentioned super long processing time during payment process.
Who want pay for ONE DAY pass which is valid only for ONE HOUR at late night?
After my request, they confirmed my order is going to be processed with higher priority and I can get the voucher soon. But as of 5pm, no delivery nor response from chat agent. She ignored my messages repeatedly.
I've just wasted time with this Scammer.