IMO, share your story with them.
What you were doing before starting your business…how it lead you to starting the business…what it means to you…how you understand they have been impacted…what they mean to you…that you appreciate them and that you want for them to have the same business opportunity in their future…that the world has thrown us all a massive challenge but you are committed to coming out the other side and looking forward to seeing the kids having fun at your arena again and most importantly to see your team back at the arena and enjoying themselves too.
When you feel like you have developed a solid plan for how you will operate when your business is allowed to open I would share that with your team too…don’t leave them guessing….and they may provide you with some good inputs too.
Sorry to hear of the impact this is having on your business but great to see your concern for keeping your team motivated.
All the best.