My FI is from a very small town in New York and we have 70-100 people on our guest list that would be from his side up there. We pushed up our wedding date to June for practical reasons (my 4 year old need to start pre-k and end pre-k in the same place).
That being said, I know for a fact 95% of them won't be able to make the trip (mostly because FMIL has talked to the majority of them already). It's expensive, and pretty last-minute since we didn't send out save the dates.
We are flying up to NY during Thanksgiving and would like to have an informal reception/dinner with all of his friends and family up there to celebrate with them as well. However, we are definitely still inviting them for ettiquite reasons even though we know they can't come.
So how do we word this on the invitation? Do we enclose a separate card? Not include it at all? We want his friends & family to know that we want to include them, we understand they won't be able to make it, and not to worry because we are planning on celebrating with them during Thanksgiving holiday?