I stayed in the same hotel with my fiance in Cairo. We registered and stayed in separate rooms. I was escorted to Egypt by my Wali. No questions were asked. I showed USCIS my airplane ticket stubs and numerous photos of us at the hotel, stores, museums, and tourist sites. His Visa was approved.
A great resource book that helped me was called the Fiance Visa: Step by Step. It may help. I have attached a link. Best Wishes. -Robin
https://amzn.to/3OVp7kq