Hi, we live in Krabi, Ao Nang. My parents will be visiting soon.

Mom's got a single entry tourist visa. She will be staying for 88 days starting from 24th November.

My father will come on Christmas day for 3 weeks and will enter the Kingdom on 30-days exception of stay.

Both of them will enter Thailand in 2019.

Now they are planning another trip to Myanmar in April 2020 and want to come visit us for another 2 weeks on the way back from the trip. They would be crossing the border by land and both getting 30-day exception stamps.

The question is, could they be denied entry due to a short break between this trips?

They are both Russians, and last time were visiting a year ago during similar dates (November 2018 - January 2019).