In the description, list what you offer (supported or unsupported tours) and what features are on the website, such as mailing list, photo gallery, news and events, pricing.
DO NOT list every keyword you can think of - this only slows down the submission request and it will require heavy editing before actual entry occurs.
DO NOT place the company name in the DESCRIPTION. Begin description without the company name, it will be listed in the TITLE ONLY.