Tickets for Sunday were not sold out as of that morning, so I expect the crowd was a bit lighter. If you're planning to attend a future Sun WineFest, you may find that Sunday is the better day to go, and you should definitely plan to arrive as early as possible to avoid the largest crowds. You may even want to taste from noon until 2 p.m., take a breather, and then return for the event's final hour or two in order to avoid the worst of the congestion.
As is common in the travel industry, the writer was provided with complimentary lodging and admission for the purpose of reviewing this event. While it has not influenced this review, About.com believes in full disclosure of potential conflicts of interest. Ethics Policy