Coles or Safeway stock "Nifty". I swear by this product to clean machines that have not been cleaned for years. Spray it on a rag, and then clean the playfield. As Mike pointed out, NOVUS is by far the best product for cleaning and polishing playfields with or without mylar. Novus is available from RTBB - http://www.rtbb.com.au/catalog/product_info.php?products_id=3204.

Wax - use "carnauba paste wax". I have been using "Meguiars". You can use "Mothers" as well. I have yet to try the new product from RTBB - http://www.rtbb.com.au/catalog/product_info.php?products_id=3156