I'd suggest to avoid the Dec. 6 weekend (Sinterklaas!) and move up one or two weekends to the Dec. 20th. How about a mid-winter-night lase-off? ;D
Depending on the number of people, I might be able to pull a few strings in Ehv as well, I work as a volunteer at a venue that will happily appreciate us laserists (has a stage as well...)
Hope to have the .6W RGV done by that time, so I can use it at the New Year's Eve party at the same venue.