Yes okay sry. If you are trying to get inthe first and only talk in the morning (the keynote which explains what fosdem is) then you might not be able to get into that one.
It was the one after that. But fair enough that a lot of people show up for the opening keynotes to start out. That said, the event was very crowded generally and you really did need some sort of strategy that took that into account. I was a lot more organized this year than I've been in some years past and was able to better use my time and minimize frustration as a result.
Not always. The one time I tried on the morning of the first day it was full.