Transit via KEF
Am due to fly GLA to DEN with Icelandair via KEF in July. Previous transatlantic flights have usually been GLA/EDI to EWR and then to wherever with all mandatory USA pre-flight checks being undertaken at point of origin. However, given that the forthcoming trip is GLA to KEF, unload and then re-load 1 hour 20 minutes later for KEF to DEN, am I correct in thinking that the US pre-flight checks will be undertaken at KEF?
Also, if food and non-alcoholic drinks are purchased at GLA (post- security), what is likely to be the situation regarding taking them into the cabin for the second leg?
If anyone has experience of transiting KEF I'd be pleased to hear about it.