I swear I looked at that and thought "We're gonna start a MEM-OSA (Osaka) route??" lol. But to answer your question, we don't have sparkling wine on domestic flights but you can have a variety of mixed drinks, wine and beer so you will be a able to get your Vegas party on before you get there. Just a warning though, legally we have to cut you off if you appear drunk so behave yourself and you should have a good flight.