We are thinking about the Mandalay Bay for our rehearsal dinner. I was curious to know if anyone has used this location and how everything went? Right now, they say that we have to pay an extra $175 to reserve an area for our group, but they also said that the area is not guaranteed. Beyond that, we have to pay a 20% gratuity even though we will serve ourselves at the buffet (besides drinks). They told me that was Union policy and their employees are with the Union.Has anyone experienced any of this when using the buffets? Any information would be really helpful! Thanks so much!