It says 1000kms or 1 month which ever comes first.
Definitely take your car. Try to keep an eye at what ever they are doing.
They would simply check every thing. Just to be safe. Plugs aren't changed, they might open up and see if the color of the plugs is alright and doesnt need to be adjusted, else they go back in. I got my WagonRs 30k service done. He opened the plugs cleaned them with a cloth and put the plugs back in. No gapping no petrol cleaning.