ANSWER:

As long as the food is halal and you are not participating with them in their celebrations, this is permissible. 

In India non Muslims woship their idols and offer them the food as prasad and then sometimes offer us. Is it permissible to eat sweets or something which they first offer to their gods? Some scholars says it is haram to eat food on which Allah’s name is not taken. If it is so then the things we buy from market can be haram too.

Halal/Haram Matters, Religions | May 29, 2018 5:10 am
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I know in the Quran we learn that seafood is halal for us, but recently someone mentioned that basa fish may be haraam. I did a Google search which says: Eat any fish that has scales, and do not eat what does not have scales.” Imam Al-Baqir (a.s.) the claim is that basa fish has scales and so it is not permissible to eat. Can you clarify?
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It is allowed from a restaurant which also cooks haram meat to be delivered vegetarian food. because I think that maybe they are the traces of haram meat. For example, if they use the same knife or board where haram meat was