Thanks for your reply. Its not that 12-15 year olds are one shot of a 2 shot regime - the UK government are only allowing one shot for this age range. Hence why it is so frustrating as here in the UK, this age is fully vaccinated (as one shot of one) and yet the CDC have 2 shots to be classed as fully vaccinated.
From 8th November the US are allowing completely unvaccinated under 18 year olds in from the UK with just a PCR test. I wish either the UK would allow a further vaccine to this age range or the CDC/US government agree to allow UK children on a cruise ship. Lots of unhappy UK families unable to cruise from the US...probably for the foreseeable future too.