The majority of our guest list are married/engaged/dating someone specific so most people we invited with their SO by name. We also extended a plus one to every "truly single" person on our guest list (adult only reception) most of our guests who aren't seeing anybody specific replied by themselves. Anyway my dads cousin replied that he is bringing his son which is fine, he's driving over 3 hours each way so I'm sure company in the car would be nice and his son is in his 30's so its not like thats interfering with our adult only plan. My question is I want to sit my dads cousin with my dads other cousins and other aunts/uncles who are all in their 50's-60's and would like to seat his "and guest" son at the table with my brother and my cousins who are all in their 20's-30's I think he'd have more fun at that table (these are all cousins he's related to also) is this ok?