I went to scrutineering for the first time last year - on the tuesday.
Excellent day out - you can get close-up to the cars, drivers and team principals. There was also a fair gaggle of exotic road cars on display as well.
Easy trip into town on the tram with a 5 min walk at the far end. Also, that day was the hottest day of the week last year.
If you are an ACO member, there is a small enclosure with a bar which gives you a good viewpoint.
Well worth a visit in my opinion - will be going again this year. The complete schedule of the times is published by the ACO, and will be in the CA guide - well, it was last year
Del