ALCOHOL

[Guest Fatima]

I wanna know if its haram to go out on a dinner or to lunch with my non muslims friends knowing that at lunch they will drink alcohol. 

[ali_fatheroforphans]

Sistani's fatwa:

Question: What is your opinion on Muslims eating in non-Muslim or even Muslim owned and operated restaurants which serve halal food however also serve alcoholic drinks? If the alcohol is not being consumed at our table, does this change the ruling?

Answer: If alcohol is not consumed at your table, there would be no objection and you can eat halal food in that restaurant. Yes, if going to such a restaurant is considered bad for the reputation of a Muslim, it is not permissible to eat in there.

[Guest Fatima]

for example, if i have a dinner with my non muslims friends of my work, and they will drink alcohol, can i sit wih them at the table?

[Sirius_Bright]

51 minutes ago, Guest Fatima said:

for example, if i have a dinner with my non muslims friends of my work, and they will drink alcohol, can i sit wih them at the table?

No. Not allowed. See this. 

3 hours ago, ali_fatheroforphans said:

Answer: If alcohol is not consumed at your table, there would be no objection. 

Means if alcohol is consumed at your table it isn't allowed.