I was at the 1st weekend in Budapest (at the Novotel Budapest City Conference centre). I only attended the morning sessions (Saturday 0130, Sunday 0230, Monday 0100) and skipped everything else as I was meeting with a bunch of people during the weekend and wandered around the city.
The dance quality was pleasingly high, floor was good, there was always space and the music was high quality. There was always water available which is a rarity in the Continental Europe congresses I've attended so far. I lasted until around 5am on the Saturday, until breakfast (!!) on the Sunday and had to turn in Monday "early" so I could catch a midday flight home.
My enjoyment of the weekend does not prevent me from criticising the late starts for the "morning" socials and I know of a few people who have made this complaint. I think the shows lasted longer than they should have, eating into dancing time (my spies informed me when it was suitable to get onto the floor, so at least I got a nap in). I get the feeling that there is something of a masochistic streak amongst some dancers that feel the need to arrive late and dance until 0700 to prove something, and I get that, and perhaps that is the point of this particular congress, but don't let the late finishing of shows deprive people of social dancing, please.
Despite all that, I think I caught a dance with Sophia Safran...or someone who looks incredibly like her. Not that I was looking for a dance with a star. I just remember having a break on the side at 0500 (I think) on the Sunday, and a woman looking as fresh as a daisy coming up and asking for a dance. I don't usually go onto the floor in the middle of a song so I declined and said I'd go on the next song. She was fine with it and had a dance with someone else for the rest of the song, then waited for me to come to her for the next dance. I tell you, her dancing was so so smooth, it was like gliding with someone on ice skates in full control of her abilities. Afterward, I had to verify online if it was really her without luck.
She was a highlight in a Sunday morning of fantastic dances with other partners. That Sunday morning will live long in my memory.
When you said morning socials, I was puzzled. I thought you meant afternoon socials. What you meant is regular late night socials. I recall at Sibenik after the night social ended at around 6am (started at 12am though I never made to it before 2.30am), there would be after party social dancing which started around 7am or 8am by the beach. It went on for 2 to 3 hours. There also was afternoon social by the beach from 2pm to 6pm. That was a lot of social dancing if anyone wanted. They also had classes all day and my housemates would go to multiple classes. By time they got back around 7pm, they were exhausted.
El Sol also used to have 8am after party. The attendance used to be very thin.
You are using military style notation for detailing the time