Are there limits on how many tourist visas an Irish passport holder can get for Thailand per year?

An Irish passport holder can indeed obtain multiple tourist visas for Thailand, but there are practical limits on how many can be issued back-to-back at a single consulate. The general consensus is that tourists crossing land borders may be limited to two visas per calendar year, but the issuance can vary by consulate. It is also noted that excessive visa applications may lead to complications, such as a consulate placing a restriction ('red stamp') on future visa issuance, although using a new passport may help alleviate this issue.