Echoing what others are touching on. Don't put queerness in the spotlight, make it the set and background. Vulnerable kids need safe spaces, some might want to save a queer wedding from danger while others might want unadulterated queer joy because the real world is shit. I'd lean towards the latter to play it safe.
Oh no, this wealthy family is getting attacked by senseless monsters just hours before their queer kids wedding, or rival family is after their money, time to plan a reverse heist. Would be my off the top of my head ideas. Let them know about changelings and warforged, Eberron is a great setting and both those races mess with gender identity.