Bob, had been offered tickets to the NRL Preliminary Final at Sydney Stadium. As Bob, with his son Mario, approached the stadium, he joined a long line of traffic edging its way slowly towards the car parking area. When Bob's car reached the entrance to the car park he paid a parking fee of $30 and was handed a ticket containing information on each side as follows:

Front facing side

AUSSIE STADIUM

Admit one vehicle to CAR PARK

Good for date of issue only 15-09-18

$30

Reverse side

Car or vehicle accepted subject to the following conditions:

The NRL will not acceptresponsibility for any loss or damage whatsoever of or to the vehicle, its accessories or contents. Vehicles and goods are left at Customer's risk.

He drove his car to the designated parking area, parked it and then, with his son, walked to the ground and watched the match. On their return they found that their car had been badly vandalised by unhappy supporters of the losing team.

a)Is Bob bound by the clause on the ticket? and

b)Would your answer to (a) be different if Bob had been to Sydney Stadium on ten other occasions in the previous two years and on each of those occasions he had received a similar ticket in the same circumstances?