About LET ALONE.

[hoangkha]

Hello, teachers!
I find LET ALONE usually used in negative sentences.
- There isn't enough room for us, let alone any guests.(OALD)
So is it used in affirmative sentences, please?

[Rover_KE]

Yes, it is.

'There's plenty of food here for everybody, let alone booze.'

Rover

[Offroad]