Valet attendant Zach was terrible! We pulled up to fix an issue with our reservation, the entire valet was empty and he demanded that we show him our reservation email and then on top of it a tip to keep our vehicle in valet. He was so unfriendly and made our first impression of Mandalay bay a terrible one. Upon returning to the car I told him I thought he was rude and he said \""ha! Ok\"".. I told him I've lived here for 5 years and have never experienced such rude behavior from a valet attendant and he proceeded to look at me up and down and say \""I've lived here my whole life, sorry honey\"". I just was completely appalled. I have always loved Mandalay bay but have never felt so disrespected by a valet attendant.