I am flying KLM City Hopper on KL1066 on 9 Oct and returning on KL1065 on 11 Oct. Never flown this airline before, what can i expect? anticipating basic service for this short hop. Also i have not seen the cls codes that i have been given before. The are X outward and B return. Can anyone tell me what these mean? is there any flexibility with the ticket? Many thanks in anticipation.