Safety first--tell a friend where you're going. If you're not going to a hotel bar, where it's perfectly normal to be alone, take the friend along.
If you're lucky enough to live in a town with a great hotel, enter the stunning foyer day or night with a good book and head for the bar. You can pretend you're a visiting prince or princess from Morocco, or that you're waiting for your European lover to meet you, whatever you like. Order yourself a club soda with lime. It's likely to be cheap and looks just like a gin and tonic. Who knows, your next drink might be free!
You can people watch or just sink into the lush decor, soft light, and meticulously planned ambiance and be transported.
It's just another easy way to make life more lux for cheap or free.