So we limited our guest list to aunts, uncles, and 1st cousins and no kids. 1 cousin has a 17 yr daughter MOB insists we include. No big deal, but she has 2 younger siblings (9 and 3). To make MOB happy, we should invite 17yr old. We tried to explain "circles" of invites, but MOB was having none of it. She said she's fine excluding the 2 younger siblings, but this seems rude to me. If we do include all siblings, it will set off a sh!t storm of epic proportions. From last family wedding, 2nd cousin invites was the major scandal. some were invited, some weren't (on MOB's side of family). We excluded kids because our guest list would go from 170 to 250 pretty instantly. Venue holds 190.
So a) stand our ground with MOB b) cave, invite cousin, no siblings c) cave, cousin, siblings?