Vendors interested in doing business with the city of Montgomery are asked to register through Bidnet Direct. An Informal Solicitation is a procurement accomplished without an invitation for bids, request for proposal, or request for expressions of interest.Solicitations and Contracts. Learn about current bid and contract opportunities available to consultants, service providers, contractors, vendors, or suppliers. In addition to the submission of a bid, each bidder must supply the financial and qualification information contained in the Bidder Questionnaire.