Not exactly, but broadly yes. You have to go back to Ireland to trigger your H1B. (Also, and I think you aren't suggesting this, but never ever ever overstay yo

Not exactly, but broadly yes. You have to go back to Ireland to trigger your H1B. (Also, and I think you aren't suggesting this, but never ever ever overstay your holiday visa, or you'll be banned from getting a US visa for 3-10 years).