I'm planning to visit Hergé Museum in Brussels. I would like to know if I'm planning to buy tickets from the premises will there be huge queue on a Saturday?
I have been there one month ago on a Saturday and I waited for 15 minutes. I arrived at 11:00 AM (ie in the morning). What I have found is that Bruxelles isn't so crowded right now.
The Herge Museum is not in Brussels, it is in Louvain-La-Neuve, about an hour away by train. When I visited in 2012, there was little to no wait.