Am really glad the festival went well!
We dropped him round to crèche at 9.15 and picked him up at 10.30. Same tomorrow and we'll build it up gradually.
When he came home he was starving (even though he had shit loads of breakfast) and was a bit stroppy and Kevin The Teenager. Turns out he was tired and he went for a nap at 11.15! Only 4 hrs after getting up from a 12 hour sleep! 
But he enjoyed himself there - they have a play kitchen which is the greatest thing in the world. And it's literally 5 mins waddle door to door so we can walk him there.
Strawberry buy some wee figurines or similar and surprise her with them on the plane. We did that (Night Garden ones) and he played with them the whole flight. We also downloaded all these Fisher Price baby peekaboo type apps to the iPad which were handy. And if all else fails lots and lots of snacks!
We did use the reins in the airport a lot - they were an absolute godsend cos of all the hanging around. We still had to walk around with him on the concourse a boring amount though. And the escalator held a dangerous appeal so we had a rather fraught disagreement about that. Try to avoid her going too near it if you can as it's too tempting.