Truthfully, I do not know what you can and can’t do with Covid-19. I will tell you the beaches are an option. Just make sure you have a face covering. Everywhere requires it.
The weather is nice here so there is probably a lot you can do outside.
Covid has things so messed up. There are nice hotels down near the airport but I have no idea of the prices. They usually are expensive but with limited tourism they may be cheap.
Balboa Park is always a fun place to go.
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