What could be better than enjoying the sun to increase vitamin D levels and run, laugh and swim to keep up your health.
From the EPA: People who are infected with COVID can release particles and droplets of respiratory fluids that contain the SARS CoV-2 virus into the air when they exhale (e.g., quiet breathing, speaking, singing, exercise, coughing, sneezing). Particles from an infected person can move throughout an entire room or indoor space.
The take-away is, your outdoor patio and pool are has loads of natural ventilation and as a result the spread of COVID outside is very small.
So have a pool party!
You don't need to wear a mask unless you want to wear a snorkel and mask for underwater fun.