Events with category notified by email

Hi,
Thanks for the module. Just great.

I am having trouble solving this problem:
I have different kinds of events in different locations, like, movie, conference... and city 1, city 2...

The email notification of the signup module doesn´t include those fields that are very important to me as 2 events might tkae place in to different cities.

As two same events taking place in different location have the same node title, it is difficult for me to know which is which in the Signups overview list.

How to include the category fields in the Notification email both for the user and the admin?
Is it possible to include the category field in the Signup list?

Thanks.

Michael