My younger sister is planning to marry a goy. Having resigned myself to the fact that it's happening, I feel very conflicted about whether to attend the wedding. On the one hand, my general hashkafa says no on the grounds that that would be giving an implicit stamp of approval (as the more observant older sister) to something I don't approve of (and could be complicated for me since, for example, food served will probably be treyf), but on the other hand I feel like my attendance might be better for shalom bayis and maintaining a relationship with my sister (and any future children she may have). I'm really not sure what to do here.
I do not know the specifics of the wedding or the officiant, but can reasonably assume that the ceremony will not be religious in nature since my sister is essentially secular and the groom doesn't appear to be religious either.
Interested in multiple FORs, particularly people who have experience with this kind of thing.
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