Does my husband need special documentation for exiting Thailand on a Non-B visa?

The questioner is inquiring if her husband, who is traveling internationally next month with her Non-B visa, only needs an exit stamp or if any additional documentation is required for in and out of Thailand. Several community responses suggest that while it is generally required to show proof of funds upon entry to Thailand, those with a valid visa (like Non-B) are less frequently asked for such documentation. However, carrying proof of funds is advisable for safety.