Having believed that all open days were closed, I received an email from target jobs informing me that Edwards Wildman Palmer were still taking applications.
Now, I am not 100% sure that they are a firm that I want to apply for a training contract with, but an open day there would really put me in a much stronger position. However, on the application form you have to specify whether you want to apply for the training contract, the open day or both. Do you think that selecting the open day on its own would put me at a disadvantage? Or do you think I should go for both and adopt the 'what have I got to lose' mentality?
Why not just apply for the TC? If you realise you don't want to apply to the firm after the open day you could withdraw your application.
Although if you get invited to the interview (which wouldn't be guaranteed anyway) you might as well go, for a few reasons. The market is not great now obviously, you might change your mind after attending the interview and interacting with the partners, and at any rate, it's a way to practise your interview skills.
I went to the Edwards Open Day myself last year and had an invite for the TC interview a few months later (but couldn't attend as was in Asia).