Low Calorie Alcoholic Drinks?

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Hey everyone!
So I'm headed to the bar tomorrow night for a friends' ''welcome home'' party, so I'll be expected to have at least ONE drink.

I am wondering what drinks are recommended that are low in calories.

I have a LITTLE room to splurge as my calorie intake is 1500 atm. But I am a lightweight so I RARELY pass my 3 drink limit. Also, I'm not a huge fan of beer, and I don't drink pop. My fav drinks are either Gin & Tonics or Amaretto Sours, but I heard bar mix is kinda deadly diet-wise.

Any tips??
What about wine?

xx