QUOTE(GMc @ Jun 27 2012, 06:03 PM)

Dont worry, chances of a string going are v remote. Check for any with tatty bits and change now. Can you tie the required knot though? If not get learning....And take your whole kit with you.
If one did break I would finish the piece pretending to play the missing string if poss. It is v unlikely to ruin everything and that is what the pros do. Then talk to examiner about going out to change it while he does next candidate and remind him that the string is likely to be a bit off as unsettled. Pull it a bit sharp and hopefully it will drop a touch as you go. Hopefully he will offer a replay of piece as its only grade 2 so not v long.
Have you tried recording and listening back? And made sure you have points in each piece to pick up from if they have a major prob to avoid going back to the start? And play with deliberate distractions thrown in by others if poss.
Have fun. Keep rustling up audience. Try your local old peoples home perhaps. The examiner will probably not have done many harps and will be excited to see one. What are you playing?
I haven't had a string break yet, so I've never changed one. They all look fine though, so hopefully this is just me being crazy

I'm playing:
While Bagpipes Play, Mister Blister's March and Mountain Stream.
I think they provide a bit of variety and are all quite nice pieces.