They usually turn the lights off at 9pm. Kids may be on the field until 7 or 8. If open, jump on, but don't push anyone off. Can start in the cages if needed. Use bullpen mounds they are better than field mounds if needed. BP must have proper protection and screen set up and someone must shag home run balls. Only play on the back fields.
Practice is optional on Saturday and Sunday pm. Good training for night shagging and hitting to prepare to play under the lights.