@Demi ********
Enter by visa exemption. Tourist visa won’t do you any good. You will just spend money on paper with no guarantee to entry.
Travelled with a group recently from Cambodia to Thailand. The only ones who were stopped for questioning were those who after leaving Thailand got a setv in Cambodia before coming back.
If you do want a visa, next time when you travel home, get an metv available for 6 months, and can be used for 2 or more trips