I have to write quickly so I don't forget!
I just dreamed that I was in my bedroom, and I noticed for the first time that there was a bakery attached to one side of the room with no partition. I was wondering how I had slept or relaxed in my room previously, without noticing the delicious aroma of baked goods or the really cute baker in the muscle shirt who worked there.
I struck up a conversation with the baker, who turned into a barista and was making coffee. He was flamboyantly gay and very friendly. He was talking about fashion and colour, so I asked his advice on redecorating my bedroom. I said I would pay him cash "under the table" as my interior decorator if he was interested in helping me with my theme bedroom. He was very eager and started with the curtains, since I'm adverse to sunlight.
As he continued designing my bedroom, the planning evolved from bedroom design into wedding reception planning. My bedroom turned into the yacht club I used to attend as a child which has been subsequently rebuilt. He kept asking when my wedding was. I was trying to defer the topic by telling him it was "years away", since I knew I wasn't really getting married. I didn't want him to stop the wedding planning because I was enjoying seeing the old locations which were very nostalgic. I've even tried hypnosis in real life to relive some of the visions I had in that dream.
The barista showed me a glass dome like the red rose dome in Beauty and the Beast, which illuminated visions of my future wedding inside. There were beautiful changing colours inside the dome. Somehow I looked like Audrey Hepburn and I was dancing? My late father was in the glass dome dancing with me. I also saw visions of sentimental childhood places that I had forgotten in real life. As I was watching, the barista continued trying to dress my windows so that there wouldn't be too much sunlight at the wedding. More and more windows kept appearing, and I kept saying "I swear I've never seen that window before! How did it get here?!", but he always knew exactly what to do in terms of window treatments.
A blonde woman arrived and somehow I told her I was autistic. She took me very seriously and didn't dismiss me or become condescending like some people would. She was catering to all my sensory needs for the wedding, including the removal of the bakery from the side of my bedroom / wedding reception. I told her I wasn't really getting married but she said it was OK, and just to enjoy the dream.

Funny that you mention nostalgia, and mention Audrey Hepburn. When I was a kid I watched the beginning of the movie "Sabrina" on the late show on TV. But it continued past my bedtime. Decades later recently ...I thought about the movie and wondered how it ended. Mentioned that bit of unfinished business to a friend, and later she called me to tell me it was on TV.