Will overstaying my visa by a week and receiving a 30-day extension affect future border re-entries in Thailand?

Overstaying your visa for a week and receiving a 30-day extension generally should not affect your ability to re-enter Thailand via border bouncing. However, it can create the perception that you intend to live in Thailand long-term without proper visa arrangements, which may lead to questions at immigration. It is advisable to ensure you have the correct visa that aligns with your intended stay.