Originally Posted by
ScruttonStreet
Can we in fact leave them in the car at Heathrow, do the day trip with no bags (so effectively checking in zero bags at AMS at the beginning of the ex-EU), then check in the whole lot on the second leg of the ex-EU, from LHR to JFK the following day?
Yes, but wouldn't it be easier to take all the bags from the car to T5, put them in left luggage either for the duration of the LHR-AMS-LHR on the first day, or overnight so as to collect them just before you check in for LHR-JFK? It will cost you a little bit, but it might be worth it for the hassle of not having to go back to the car after you get back from AMS.