From what I am gathering, she was staying at the same hotel and just didn't come downstairs.
If we assume that her meetings with the Saudis were just based on being star-struck, you would think Banderas would be more interesting than a royal. Strange that she couldn't be bothered to come downstairs even for a few minutes just to show her face.
Maybe they came to her and she met with a few of them behind closed doors. Still, its strange. Maybe she is the kind who gets more pleasure snubbing a "famoso" than shaking hands with one. But these are supporters. So its strange.
It was very strange, because in the video the celebrities were all lined up obviously waiting for her to come out, since this had clearly been arranged in advance. It looked to me as if they been there for some time when the video was taken because they were chatting and glancing at their watches (but remaining lined up).
And then somebody came on the PA system and said - in Spanish, naturally - that because Michelle Ma Belle and her party were tired, they were not coming downstairs.