I hope that there is to be no playing on this first meeting and that you are meeting somewhere public? Basic safety... also make sure someone else knows where you have gone and what time to expect you back. Set up a safecall as well - a trustworthy person (probably the same as the person who knows where you are going) who rings your mobile at a prearranged time. If you don't answer, or someone else answers or you don't sound too happy or whatever they take action (call the police etc). Ok, chances are you will be fine and this Mistress will be all you want and more but you still have to be careful. There was a story about a man recently in the news who thought he was travelling to Scotland for sex with a woman he met on the internet (who he'd been talking to for weeks online) and it turned out to be two of his mates having a laugh. It could be a lot more sinister...

Having said all that, my advice if it is not a serial killing rapist you are meeting (and, please, Mistresses prefer it if you don't say things like that to their face ) is to be yourself. Don't try to act like something you are not. Also, unless she has specifically told you otherwise, don't treat her any different to any other woman in public (i.e. no kneeling, calling her Mistress and so on). E-mail her if you want to know for certain how she wishes to be addressed and how you should behave for her in public or private. Generally, however, a first meeting should be 'two friends having a quiet chat and a drink or a meal together' as a get to know you thing. Because despite the e-mails you will not know her fully yet and she will not know you. If things lead on from there, great, but do not expect much more than a chat.