Re: What to do at work lunches?
You should definitely go and have a soft drink, juice etc. Sometimes these lunches are held at the office itself. In that case, bring your own food and join in. If you don’t want to use restaurant glasses for drinks, ask them to pour your drink in a disposable one. The bacon issue is a tough one though in case you go out ( don’t know how often such meats are ordered in the office, never seen it except if people are getting a BLT sandwich or something). You may see other people consuming it and feel ill at ease. Everyone has their demons. You should be comfortable in your environment.
You could suggest a Vegan or vegetarian restaurant. I don’t know if Vegan restaurants serve alcohol (if that’s an issue). But that way you could join in without bringing up religion.