Hi drshelley,
My understanding is that the discussions at mediation are supposed to be confidential and not used in future submissions. Dont worry too much about the claims made by the respondant at this stage, the adjudicator will consider all submissions. In my case the respondant tried to accuse me of intimidation against thier tenants but did not provide any evidence. I am assuming you have some supporting doccumentation from visitors and neighbours who have experienced the noise transmission. I dont think the CTTT can issue orders akin to an AVO and require you not to contact the other party. I would hardly think that two visits over an 8 month period would amount to harrasment. I would wait for the adjudicators orders and then if necessary appeal any decisions you are not happy with.
Hope all goes well. Keep us posted