(CBS) Every year there is optimism on the North Side for baseball. But this year, that may not be the case at least for Wrigley Field construction deadlines.

During the 30th annual Cubs Convention on Saturday, the team told fans that the bleachers won’t be ready for the April 5 opener against the Cardinals, the first ever night home opener at Wrigley Field.

Cubs executive Crane Kenney announced a target date of early May for the left-field bleachers and late May for the right-field bleachers. For games prior to May 11, the Cubs said season-ticket holders with bleacher seats would receive an email with an option to refund their tickets, receive a credit on their account or to have relocate their seats to another part of the ballpark. If the seats are less expensive, they will be refunded the difference. They would have to pay the difference for more expensive seats. They have until Jan. 19 to respond.

Cubs president of baseball operations Theo Epstein said this year won’t be ideal in the ballpark for anyone — including both players and fans — but he’s asking for patience in the short term.