CHS Field has opened. But not for baseball.

The St. Paul Saints are gearing up to play a modified season — but it won't be in St. Paul. Instead the team will be playing in Sioux Falls, S.D., starting July 3. But fans can still head out to CHS Field in St. Paul's Lowertown, even if the team isn't there to join them. This week, the Saints opened a Pop-Up Cafe at CHS Field that caters to hungry fans with an assortment of tacos, burgers, hot dogs and ice cream. The cafe is reservation only — in keeping with state rules for restaurants…