My 90 day non-immigrant B visa is stamped "valid until 8 July 2019", but immigration at BKK airport have stamped me in until 19 July. Is this correct, or am I only permitted to stay until 8 July on the current visa?
TLDR : Answer Summary
The user has a non-immigrant B visa valid until 8 July 2019, but immigration at BKK airport has allowed entry until 19 July. They seek clarification on whether they should adhere to the visa's expiration date or the immigration stamp date for their stay.