So, I know it's okay to tell people no when they take it upon themselves to add guests to their RSVP, but... Here's my situation.
I specifically chose a destination wedding (Caribbean) to keep things simple and have minimal stress. The plan was ONLY our parents and wedding party (8 plus us). But, we're having a large reception when we get back and inviting everyone. Now, wedding party members who were single when invited are planning on bringing significant others (who we've never met, BTW). I understand we're going to the Caribbean and it's an expensive trip and a vacation too. At the same time, I don't want the headaches of having more people, especially ones we've never met. And the ones bringing significant others tend to cause issues when trying to impress a significant other, if you know what I mean. What should I do?
1) Brush it off and say oh well
2) Say they can come on the trip, but not to the wedding itself
3) Say I'd rather only have the invitees only there
4) Other suggestions???
I just don't want any extra stress or headaches, but I don't want to be a bridezilla either! And I have to figure out how to explain to my grandma why she's not invited but someone we've never met is there

Thanks for the advice!