Yes the bubbles are very safe. We called before to find out how they clean the bubbles. They open them up to air out for at least 30 min between reservations. They disinfect everything in the bubble. They also have hand sanitizer on the tables and servers wear masks. They also only come in when serving food or beverages other wise they talk thought the bubble.
Good you can reserve you own bubble to eat in. That is heated and cleaned after each use.
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