Just read a trip report where a person went to Reviv for an IV and it helped. This is the first I have heard of this place. Who else has actually used this place to cure a hangover or to prevent from getting sick? Do you do the IV or shot? Do you just get the Ultraviv (Hangover IV) or go for the Royal Flush? I recall I would have gladly pay the fee a couple of times while in Vegas.