Use the GRAB app for getting around. It works like UBER or LIFT.
Patong Beach is the “happening” area of Phuket.
Agoda.com is the Asian version of Expedia or Kayak.
Krabi Thailand and Phi Phi Islands – possible excursions.
By the way I have been watching very close the Coronavirus on the news. Luckily, our stop over is in Seoul, South Korea, and we do not have to go through Bangkok.
The medicine prescribed for “Delhi belly” / bacterial infection in the stomach is Ciprofloxacin