I have read some of Terminal Lance but no means an expert in it. Also have a military nerd of a friend so the Lance Corporal Underground stuck with me. 

Depends on Gallia's drinking age to be honest. If it is over 18 Linda probably won't have much tolerance for alcohol. But she will probably stick with Eris for a bit. After all, she will know everything and nothing escapes the underground! Already have an idea of how Linda will behave while drunk.

It is nice to have interactions like this. Also gives other characters opportunities to shine or do something.