Tips for the first meeting

[passivevoice]

Hello all! The big day is coming I will meet up a transexual escort lady(i think s/he is a cross dresser) I checked a lot of different profiles and chose this lady.
She looks so feminine on her face but her body is a bit masculine which is exactly my type. She is called as the most energetic lady on the comments.

I asked her a lot questions but she said "I will host you for 3 hours and you'll pay only for 1 hour, because you're virgin. Just come to me and I will teach you everything and you'll get addicted..." and she said if I want, she can offer unprotected sex. To be honest it sounds good at first, because i want no boundaries but I am bit afraid of some disases like hiv,hpv…

I will be passive during our meeting, because I am very curious about this and as a bonus she prefers only to be on top.

So, what tips can you give me? How should I prepare myself? Can I trust her for unprotected sex? How can I check if she has any disases or not?

thanks in advance for all answers