Wear something nice (semi-casual) but make sure to dress VERY warm. Layers are always a good idea. We will be inside but the weather is typical early winter weather so expect to wear a coat and close-toed shoes. Rain and snow is always a possibility.
Coeur d'Alene and Spokane are the big cities close to Sandpoint. You will find Hotels and airports at both locations but expect a 60min to 90min drive. Sandpoint itself also has plenty of hotels available.
No, but small sandwiches and beverages will be provided.
Sandpoint is a walking town so most things are accessible by foot but it will be November (cold) and you will need to drive to and from the airport.