It would appear that the Hebridean Celtic Festival, billed for 11-14 July this year, looks set to attract record numbers of visitors. The previous years were equally record breaking, and the HebCelt office on Cromwell Street says that 2007 looks to be no exception. This in spite of the close proximity (in terms of time) of the festival to Elton John's gig over in Inverness.
The main challenge is to accommodate everybody that wants to come. The festival website has more information on this issue, including contact points for people who have a room to spare.
In addition, I strongly suggest that anyone as yet without accommodation consider staying outside Stornoway, and organise a vehicle to get to the gigs and back again. Public transport ceases at 8pm on weekdays, and 11pm on Friday and Saturday. The concerts commonly finish after midnight. For those unfamiliar with Lewis it may be benificial to know that distances to the town are never more than about 25 miles, with the district of Uig the sole exception at 35 miles distance.