Transfering from 2D to 2F on a Sunday mid-morning - fine. Inbound and outbound were both Air France flights. Walked between the two - signposting worked OK for me. Didn't look for transfer bus. Passport queue when going into 2F but I was in "business" line so was quicker than would have been otherwise. Only one immigration booth open though! Business lounge in 2F was full - no seats available. Gloomy place. Flew back into 2E on a Saturday afternoon no queue for immigration - several officials on duty. Walked to 2D - signposting OK. Business lounge far better located at level above main concourse - lighter more relaxing than that in 2F. No shower facilities - having just flown in from Brazil I felt as though I needed one! Lady at desk said that shower facilities only available in 2C lounge. Security through to boarding gate areas - slow could definitely be more efficient/effective. Boarding area concourse crowded - insufficient space for all passengers.