Yes! Discover & Go is also mobile. If you are trying to access Discover & Go on a mobile phone, you will be directed to the mobile version of the site.
Yes - for select venues. Museums that agree to accept mobile passes are also setup so that the pass can be displayed on the phone and you can gain admission by showing the pass. If the museum does not want to accept mobile passes, you must print out the pass. This is indicated when you view your Discover & Go reservations on a mobile device.
This is what it looks like on your mobile reservations page: