Thanksgiving

It's not a recognised holiday here so it's unlikely. Some places (more in the countryside) have a kind of harvest ball, but that's about it.

Why not give thanks to your safe arrival in a new culture by celebrating with a slap-up Romanian meal at a good traditional local restaurant. Would seem in the spirit of the tradition if not adhering exactly to the menu you're used to. You can certainly find places that serve a good portion of roast bird with potatoes and veg so it won't feel totally alien.

Thanks! That will probably be our plan.

You could try one of the following restaurants - they have Romanian food and most of them have menus in English so you won't struggle to find your way around:

Hanul Berarilor (two locations, one near Unirii and another on Pache Protopopescu in the house the king built for his mistress), Caru' cu Bere (interesting interior decor), La Mama (been going for years), Hanu' lu' Manuc (set in one of the oldest buildings in Bucharest), or Casa Doina.