First of all, love your blog. It is giving me wanderlust.
Now if you want emails through wordpress, you can just add the subscriber section on the widget display. It will be under Appearance>Widget, and you'll look for the Follow Blog tool.
That way if people want to follow you through OTHER than wordpress, and get an email, they can enter it there. Wordpress will then keep track of your email followers and wordpress followers.
After you add it, I would just send out a notification or have something on your next blog post to make sure they enter their emails to get updates and such.
Hope that helps!
let me know if you want my help plan a trip. I would be more than happy to help.