Possibly. I went to USA in 2019 and before I went I called them up to add a pass on that would let me use minutes, texts and data over there out of my normal plan. It had a start and end date.
Cool, thanks. It's actually quite a good deal at £10 since it allows up to 15GB of data. I paid £8 for 2GB on VOXI the other day when I went to the US.
I'm tempted to go back to EE since Vodafone's coverage is noticeably poorer, but these deals are 24 month contracts which feels like a very long time.