DF & I are having a very small COVID-friendly wedding soon. As we didn't know what the rules etc would be and having already postponed once we decided on having a quiet, intimate do. A mini break/wedding weekend away for bride, groom, both sets of parents, only living grandparent, and siblings on both sides. We each have 1 sibling. My sibling & partner are engaged, we have spent considerably more time with and speak to/see often. DF's sibling and partner have probably also been together for a similar duration of time but I could count on one hand the number of times we have seen or spoken to them, the last time being I think about 3 years ago. They do not live together/not engaged etc.
AIBU to not invite their partner? No beef here, just don't really know them at all. The most time we have spent together was 1 family meal 3 years ago. No contact since. DF's sibling doesn't speak to us much/let alone talk about DP.
I am struggling with the moral dilemma - to keep things simple we are not even having very close friend (all very understanding, and will celebrate with separately). It just doesn't feel right to have basically a stranger at our very intimate do when close friends aren't even there especially given its not just a quick event (several days away). We are ofc paying for everyone's meal/accom etc, money is not the issue here just want to do the right thing without it feeling too awkward.
AIBU?