If they are old fashioned and traditional, then they would have a problem with traditional wedding if you two already live together.

I wouldn’t address it at thanksgiving dinner of course or at any other formal or celebratory event. Just tell them casually.

When we decided to just elope most of my family just accepted it, some relatives acted a bit funny about it, like one of my nephews kept asking when he could at least come to a reception lol. When I kept saying there is no reception, he kept looking at me funny. Lol My husband’s sister acted kind of funny about it too. I asked my therapist on her thoughts and she said that we can’t please everyone and we should just do what suits us and not worry about offending people. And that’s what we did.

Ton of people have nice weddings and crappy relationships. Our marriage is great but our wedding was a joke lol Better than the other way around. Maybe you can tell your parents that quality of your marriage isn’t proportional to lavishness of your wedding. Or love for your parents isn’t proportional to size and price of a wedding