The weather in the neck of the woods is frequency challenging, and in combination with the terrain it offers plenty of of learning opportunities to people more used to flying in the flatlands down south.
England is typically shielded from the worst excesses of the Atlantic and its frontal systems by Ireland. The same isn't really true of the west coast of Scotland. An incoming front can ruin even an August fly-in. We have had some good ones though, as the photos I posted earlier demonstrate.
Two top tips:
1/ There are precious few instrument approaches in that area. It is wise to route via Prestwick with a view to dropping in there if the weather makes a VFR arrival into Oban/Glenforsa impossible.
2/ Highlands and Islands Airports Limited (HIAL), the organisation responsible for operating many of the bigger airports in the region have highly restrictive opening hours oriented around their infrequent scheduled flights. In order to be able to use these fields "out of hours" (what we might think of as peak time), you need an "out of hours indemnity" which requires the payment of a fee and the evidencing of your aircraft's insurance certificate. It is worthwhile doing that in advance to give you maximum flexibility when it comes to timings and diverts. Details are on the HIAL website.