Retired military personnel refer to military personnel who served in China and retired, so the “retired military personnel” here refers to Chinese retired military personnel.
“Bringing family members and children” means that a person can bring his or her family members with him when traveling or on a business trip. As for whether discount tickets can be purchased, this usually depends on the specific circumstances and relevant regulations. In some cases, family members and children may be eligible to purchase discounted tickets, such as student tickets, children’s tickets, etc., but specific circumstances need to refer to relevant ticket purchasing policies and regulations. Normally, if family members meet the conditions for discount tickets, they can purchase the corresponding discount tickets.