This is a very subtle beer, comparatively speaking. If you're used to big, butch flavors, you might not be pleased. But for those who dig subtlety, Mild is a really nice style.
Yes, it's really enough. ABV depends on your FG - if you use the numbers above, you're looking at approximately 3.25% That means you can have a coupla-tree Imperial pints before impairment.
Let me know how it works out for you!