Hide Account Login/Create From Checkout Process On MarketPress

Is there a simple way to only allow guest checkout on Marketpress. I know this removes the convenience of having shipping addresses stored, but client thinks this will eliminate confusion on there store. I did not see an option on the backend of the plugin to do this.

In a perfect world, just a button saying "continue to checkout" or something similar, would then take them to the next step of the checkout process.

Any suggestions would be greatly appreciated.

Nick