Congrats on your date! Its so scary and exciting for it to finally be set!
I am also incredibly new to this, so I can certainly relate to your feelings on things right now.
I am sorry to hear that your friends are not as supportive or understanding as they could be. I have told a few friends, and some of their reactions were incredibly similar. However, as they have learnt more about WLS and the reasons for choosing it they have become more accepting and supportive.
Hang in there!
Liz