I never allow myself to play even with light alcohol, something like beer, because I understand perfectly how it works. It all starts small, when you just want to relax, and ends with just lost money, because alcohol dulls our feelings and we are ready to take more risks and even not control it at all. There have already been millions of such stories and it is better to draw conclusions and learn from other players than to go through this path yourself, experiencing everything on yourself.
I feel like gambling and alcohol have something in common. They both are means of killing boredom and have fun as possible, one involves taking away problems by spending money while thinking nothing and the other involves one having fun that need your head to be sane. You can't be gambling when drunk, you can't be even driven while drunk then why should you gamble when you are drunk, all decision you are going to make that time are going to be worse.
If you are going to gamble, do it with your full sense so that you can make the right choice and if you are going to drink alcohol, do it but don't forget to find your way home and never drive while doing it otherwise you will end up where you are not supposed to be in the first place. There are some people that are sober with alcohol, doing gambling during this period is like you are just trying to dash your money to the casino, everything will be gone under minutes or an hour.