春节假期，周口这些体育场馆免费开放！

Group 1 - The article provides a schedule of various sports facilities in Zhoukou City, detailing their opening hours, types of sports available, and pricing structures [1][2] - Several venues offer free access during specific hours, such as the North Development Center Sports Field, which is open from 08:00 to 12:00 and 14:00 to 18:00 for free [1] - The article lists multiple sports activities available at different venues, including swimming, basketball, and table tennis, with some facilities requiring reservations while others do not [1][2] Group 2 - The Zhoukou City Sports Development Center offers free access for swimming and fitness activities from February 13 to 15, with low fees during other times [1] - The article mentions specific dates for free entry and low-cost access at various facilities, such as the Huaiyang District Wind of Rhythm Comprehensive Sports Hall, which is free from February 15 to 23 [1] - The document highlights that many sports venues are open without the need for prior reservations, promoting accessibility for the public [1][2]