Getting cambelt changed

Getting the belts and water pump done,full service,gearbox oil change and new brake pads in October.While part of the engine is apart
what else should l get the garage to have a look at(Two Techs)on a five year old 200,or anything in general while its there?Cheers.
 
Not engine-related, but when they put the brake pads on, ask them to also strip and clean all the calipers at the same time - keep them in good order. Also possibly check the lower ball joints for sign of play??