Most clubs have enacted onsite restrictions to minimize the number of people onsite at any given time, to help minimize exposure. Still, you'll likely be onsite for at least awhile during check-in, waiting for your first run and then your second. Bring plenty of water and necessary food / treats for your dog and yourself. At some events, these items may be available, but at most, they aren’t, or they aren’t convenient, or may not be what you / your dog want. Bring any comfort items you’ll need, such as jackets, fresh shoes/socks, hats, chair’s, sunscreen, etc. Don’t forget a second leash and any special release collars you may choose to use. Most importantly, bring plenty of patience and a pleasant attitude!