No smoking

I agree as well. We had smokers at our wedding and a designated smoking area, and they smoked there. My guess is that the wedding your aunt attended didn't have a dedicated smoking area.

Invite my brother and sister in law to your wedding - they are the anti smoking police and would welcome the opportunity to tell people not to smoke and the evils of smoking,

Seriously, just put signs out for designated smoking areas. Best wishes!

This is a great idea. We also have 2 smoking areas set up with chairs and stuff and one is right beside the outside bar for them

Some posters have said they don't think anyone would actually light up inside of a tent - here to say I have witnessed it firsthand! The groom's uncle (who is wheelchair-bound) was at a table with his adult niece, her fiance, and his two young (under the age of 14) nephews and lit up a cigarette right at the table. He was the only smoker there and I truly think no one thought it would be an issue. Nobody realized until the smell of cigarette smoke started wafting among the other 4 tables - MOG promptly stepped in to wheel him outside of the tent and into the yard. This was also a backyard tent wedding. We were flabbergasted that not only would he not ask for help getting out of the tent, but would think smoking at a table with children under a tent would be acceptable! The adult niece and nephew also ended up vaping in front of the kids, but at least they did it out by the firepit and not under the tent!

Make it straightforward with your guests - put up a sign, put it on your website in no uncertain terms - "NO SMOKING". One other poster talked about a designated smoking area with chairs and an ash tray, and I think that's the way to go. You'll get the best results if you are very clear about where smoking is not allowed and where it is (far away from other guests). Don't bring your health or preferences into it at all, don't leave any room for negotiation.