The restaurant, which also bills itself as a rum bar, is increasingly popular as a politically aware LoDo hangout, and that's reflected in the winter hours: 8 Rivers is dumping lunch, at least until May, and will open at 4:30 p.m. every day -- with happy hour running until 6:30 p.m. Monday through Friday -- and stay open until 10ish Monday through Thursday, 11ish Friday and Saturday, and 9ish Sunday. Fair warning: the web site has yet to be updated to reflect these changes.