2 Questions about registration in Membership plug in

Hi,

First off, I'm crazy in love with your products. Wish I had found you guys sooner!!!

So I'm working on a site (www.winetrendsetter.com) which currently only has a free membership, but I'm using Membership to protect premium content. We'll probably add paid levels later on.

My two questions are as follows:

1) Is it possible to hide the coupon code section of the membership form without digging into the php (which I presume would get overwritten by subsequent updates)?

2) I think I set something up wrong, because rather than loading my Registration Success page on completion, the module reloads the Register page with a message about 'this is your Subscription, click below if you want to upgrade'. Help?

Thanks!
Chris