... a conditional statement. It's valid, but its soundness is questionable ... />
This misuses of both "valid" and "sound". Valid sentences are logical truths ... truth, and thus is not valid. Soundness applies to arguments, not ...
The photo on your ticket should suffice if it doesn't break any LSAC rules. Other than that, a standard valid ID with your photo needs to be with you too whether it's a driver's license, passport etc.
What @montaha.rizeq said. If I recall correctly, your uploaded photo will be printed out on your ticket. Aside from that, all you need is a valid photo ID.