I must be mad!! We are going to Vancouver on 4th August with dd (3.5) and ds (exceptionally active and expert climber 18 months). Luckily dh is going too. I will have to take ds for walks I reckon as I am almost 20 weeks pg so will have to move around lots, but any other ideas/tips etc greatfully received (I am getting a couple of days in Glasgow next week so will be able to buy supplies!). We have (seriously) considered going the 'dope them with antihisthamines' route - are we cruel? The flight is 11 hours, leaving at 2pm, arriving about teatime same day canadian west coast time. Help!