I work online also - also require quality network. I use cellular, never rely on hotel internet. I can't really tell you about specific places most places in Bangkok have great cellar. However, sometimes there will be interference from other buildings or what have you.
I work for a company in the US. So speed from TH to US is what is important to me.
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Will give you just that. 250ms latency may sound scary but its never been an issue with zoom or other video conferencing. You may try to ask some of the hotel staff to test on their phones, send you a screen shot.
They'll keep you until the very last hour. If you show up early they'll house you a jail.
I am just kidding. You are free to leave anytime. The only caution I have for you, there is a 15 day quarantine - you don't want to come for 16 days and stay 15 of those days in quarantine.
$10.00/shelter - wont be nice but you'll stay dry. Possibly cheaper but that requires some connections.
You'll have to do your own research of travel costs. I dont know going rate of plane tickets, visa, doctor's visits, etc etc.
I wouldn't advice a trip like this. Shit always goes sideways. If you bring 80% of what you need and something happens (need a taxi or something) Then you'll spend the rest of your trip in a poor state, making the trip unpleasant.
I would suggest a budget of
$20.00/day - 1 good meal plus some other cheap stuff and a couple of deserts, snacks, etc
$25.00/day - shelter - Not great but will have AC and probably quiet?
$50.00/day - walking around money (taxi - fun stupid little shit that makes traveling a little more fun).
With that budget you'll have a good time - but that doesn't cover the cost of booze and ladies.
Last time I was looking at USA-Thailand routes I found an interesting option, 28 hour layover in Tokyo (or nearby). I don't know if its available or even worthwhile with Covid restrictions.
If you're not familiar, google.com/flights allow you to look at several different options, days, layover, prices, etc.