@He***
I really don't think that's going to happen in July. Their priorities are not people doing border runs, they will be the last to be accommodated.
Right now it is essential job work permit holders only. They have indicated next phase they will likely prioritise marriage visa holders, but that hasn't even happened yet. They are also looking at medical tourism.
Then after that they are talking about piloting something focusing on high-spending tourists only, and they will be limited to the province of arrival (like Phuket), and only 1,000 people allowed fly in per day.
Borders opening for general tourism or 90 day non-immigrant border runners I would not expect to happen until late this year if not 2021.
You also need to consider that it isn't just Thailand here, the OTHER countries need to open their borders as well. Right now I think Cambodia is the only one that has, and you need a negative Covid test, a $3,000 deposit and need to stay at least overnight, and if you are unlucky and someone on your flight in tests positive- two weeks. And right now even if you did get there, the Thai embassy would not give you a visa.