James,
It's great you're being proactive in seeking model releases. Fine Art America's Terms of Use have been updated to reflect them.
Model Releases:
You agree to provide valid and accurate model releases for all Images You contribute to Fine Art America that require said releases. You agree that You are solely responsible for retaining all original model releases and maintaining complete and accurate model release records. Model releases are to be electronically delivered to Fine Art America with the Images. The submission of falsified, inaccurate or otherwise defective model releases is a material breach of these terms and conditions of use and can result in the immediate termination of Your account without notice.You agree that Fine Art America may furnish redacted model releases to customers, in order to respond to any potential or actual legal action or comply with applicable laws, regulations, and/or union reporting requirements.