I prefer to purchase DTAC eSIM online, so I have data already at the airport, and recharge it via Google Pay in DTAC app. Notebook uses phone's hotspot.
there's no hiding, I am resident in CZ, company is established under CZ laws, and it must pay 19% corporate tax in CZ. Personal income is taxed by additional 15% *when* it is paid out from the company. The thing is you don't have to pay it out, you can accumulate it and invest it within the company.