Hi Clive,
Unfortunately you are mis informed, as Trucks and Troops is an MVT National Show you do get free entry on production of a valid MVT membership card.
So waving it at the Beaulieu staff will meet with much success.
Free entry to a great show, stalls and numerous arena events including the battle of britain memorial Hurricane, Palace House, National Motor Museum, Extensive Gardens, Secret Army Exhibition, Monorail and bus rides, James Bond experience, Restaurant and shop.