To say the whole Tesco security measures are paranoid as f is an understatement and I feel insulted trying to enter my store through electric barriers then exit through self service with a receipt that’ll get thrown in bin rather than save paper.
Smoke bombs and pepper spray should be setup for further attempts though last thing you need is to accidentally set them off retrieving your bikes from garage.
I’ve stay clear of st. Ives, but of a hole tbh compared to other places. I’d try looking at booking near it in lovely port area which would be scenic and more shall we say exclusive. Thinking near Mylor Bridge area.