I work in a school, and have many non Muslim friends. I take precautions to not eat anything from them. Now my friend are inviting me for their ganpati celebration. I've already made to many excuses but now they are forcing me to attend. If I don't eat anything and don't participate in their pooja, then can I go to their house.

Salam alykum,
there are some spiritual effects, so might you u don't eat but it effects