VOA concern for Thai

The first and the most important detail is that Thai citizens have relatively limited success in obtaining Chinese visas on arrival including one for Zhuhai. In any case, you can definitely try and in this case, by far the best is Gongbei border crossing. You will prepare your passport and accommodation booking confirmation for your overnight(s) in Zhuhai. If you can, it would be useful to have already bought ticket for Chimelong Ocean Kingdom although the last will probably not be possible.