Thank you card etiquette for engagement party?

I think it's fine to just send them to the people you know brought gifts, especially if people brought alcohol or something and didn't put their name on it or personally hand it to you. It's also perfectly nice to send them to everyone just to thank them for coming!

Do you at least know who did and didn't bring a gift? If so, I would send a thank you card to those who did saying "thank you for attending and thank you so much for your thoughtful gift". For those who didn't bring a gift, just a quick "thank you for attending, we look forward to having you at our wedding" or something along those lines.

I would just send TY's to those who brought gifts.

I would send specific thank yous to those you know gave you a gift. For the rest, I would write a generic thank you for coming, and note that there was some booze or other gifts brought that you’re not sure by who, and give appreciation for that as well.

Guests thank hosts after a party. Your guests should either have brought a small hostess gift as a thank you to the hosts, OR write a thank you note to you . Engagement parties are not usually gift giving occasions. If so done gave you silver candlesticks, passed on an heirloom piece of jewelry, or gave you a significant gift of value, you write a thank you note. But you do not write a thank you for bottles of wine, or candy, or other small hostess gifts that are a thank you to you for hosting the party. A thank you note for a thank you gift- No . Major gifts only, if there are any. And no thank you for just coming.

We are writing cards to everyone who attended, gifts or not. We really didn’t expect gifts but people were very generous.