I just felt I had to add my “2 cents” here. People, there is no one derech for Hashkafic issues like this. Turning on a light on Shabbos is a matter of Halacha, and everyone agrees it’s ossur. But this? It really comes down to sensitivities and the general mahalach of you and your chosen community. Some have no problem with it, and I think that should be fine for them. If you are uncomfortable, then don’t. ASK!
I think one point of having children/not having children yet is that the kids are a major distraction as the families are busy taking care of them, interacting with them, etc.
I remember that in sem, I sometimes went to a shana rishona couple, where the man was quite “shmoozy”, and I felt uncomfortable. I didn’t want to chat so much with him, but that meant jumping up and follwing the wife everytime she went into the kitchen! I always went with a friend, but still…
Keep in mind that there are so many other people out there that need invitations, either because they’re lonely, for kiruv, etc. Invite them!