A larger reception in home area following a small wedding elsewhere is fine. I have seen it happen many times. However, the weddings in these cases were really small and generally only immediate family and maybe the bff/spouse.
How many "close" friends/family are you talking about? A small group of 15 is probably okay as that would be the nearest and dearest. Keeping it to immediate family, even if a bit more in number, is also okay. If it is a much larger group and includes many friends, then it could look a list/b list even though the wedding is not in your area as some potential guests might have flown to Vegas for your wedding. You don't want guests at the wedding looking at the video of the "small" wedding and realizing how many were really there and wondering why they didn't make the "cut".
I agree - I think that the numbers-margin would indicate whether it was an A/B list occasion. If there were 40 people invited to the "real" wedding, and an additional 40 (total 80) invited to the in-town reception, then that's a B list.
But I don't think that's what's happening here. I'm one of the people here who really dislikes the idea of a B list - but I think that people can over-interpret this. For example - a mid-afternoon wedding with an appetizer-reception that concludes well before dinnertime. I don't see anything wrong with an intimate dinner following this - perhaps about 15 people, including the WP and the parents. My assertion is that people will have to eat dinner at some point anyway, and this isn't an extravaganza with music and dancing. But I've seen people here assert that that this is a "second reception" and therefore anyone who is not included was B listed.
I'm expressing this awkwardly - but when I say 15 people, I'm figuring that there might have been about 70 or more people at the reception. If it was more like 40, then it gets trickier, I know.