So, on the subject of food, here's the options. I'd prefer to go somewhere more unusual, at the risk of running extra expense.
The main locations for this could be Brazilian, served up by Tropeiro on Argyle Street or Boteco on the Trongate. The other 'exotic' choice is the Mongolian restaurant on Candleriggs. Problem is, I haven't been to any of them so quality isn't guaranteed.
The alternative is cheap and familiar things like a Chinese Buffet on Sauchiehall Street, an Indian on West Regent Street (With a less than perfect site), or a chip shop.
It's up to you guys. Can you have a look at the links and give me opinions? Feel free to give me some other suggestions in comments if you think mine are rubbish. Otherwise, I'll make a sad face.