Seems it's the tenth anniversary of the farmers market on Castle Terrace.
http://www.edinburghfarmersmarket.com/news_detail.aspx?pageID=8&newsID=34
And show a valid parking ticket (the first 100 to do so) and you get £2... Sustainable promotion?
I have to admit here that we go to the market every week, and at the moment we're taking the car every week as my other half still isn't able to cycle any major distance (i.e. anything over 20 minutes or so on the bike). But given the very nature of a farmers market - promoting local stuff, lack of food miles, healthy, etc etc etc where's the bike promotion? There are always LOADS of bikes lined up on the railings (indeed, mine was one of them most of last year, and is whenever I go myself).