Sounds like we have a fair bit of interest then!! Good!
Anytime is good for me.
I think the only thing happening over Aug/Sept time is the Manx Grand Prix, which is like a smaller version of the TT is on at the end of the Aug with the weekends of the 18th and 25th having practice sessions to watch in the evenings.
There are also track (airfield) days here but I not sure you want to come all the way over here to go round an airfield! (Considering we have the TT course sitting there!)
Duke Track Days
There are normally two ferry routes over here from Heysham and Liverpool, but unfortunately they went and crashed the Liverpool ferry this month so that route has been suspended for now, although I hear reports that they are going to take the Heysham ferry and use it for Liverpool at weekends now.
Steam Packet
There are plenty of hotels over here and parking security is never usually a problem. The two main hotels that come to mind are the Hilton in the centre of Douglas and Mount Murray which is just outside of town.
Hilton
Mount Murray
Rich