Hotels have common air circulation. My house does not. Valid point....I did some reading though and if hotel is following commercial code this shouldn't be a problem.
When travelling, I talk with a waiter or counter clerk. At home, I get non-contact delivery takeout. Why would you do any different at a tournament? I do not plan on dining in restaurants. On that basis, you should quarantine.
At home, I go to the gas station once a month or so. When travelling, it is 3 times in a weekend. Wow...for a 5 hour drive? You must not get good mileage.
At home, I see the same 12 parents every practice. At a tournament, I see a couple hundred people. You are planning on not social distancing and wearing a mask? Are you planning on seeing them indoors? Don't you go to grocery stores etc. on a normal basis?
It adds up. For me, a tournament is at least 10x as much exposure as living at home. That probably puts me in the “never goes anywhere“ camp. Or at least “never goes anywhere indoors”. If you are doing all of that, you should quarantine. I had presumed you were being more diligent in your behavior.
For someone who goes out to restaurants and movies frequently, the gap is a lot smaller.