I thought I'd update you now I'm back! The time difference was fine on the way there (they are 5 hours behind), we had a daytime flight and got there about 6ish their time. My lo had had his tea on the plane and he was fast asleep so we put him straight to bed at the hotel. He woke early the next morning around 5ish so it was an early start but he went to bed around his usual time and slept through every night we were there. Coming home was a different story, we had a night flight but he struggled to get comfy and only slept for about 4 hours, we landed at 9am and he fell asleep so we put him straight to bed when we got him and he slept til 2.30. He went to bed at 8ish that night so a bit later than normal and slept til 10.45am!! The following 3 nights he was awake for 2 hours in the middle of the night and he wasn't napping well in the day so it was all thrown out. Got back to normal after 4/5 nights.
The exchange rate is rubbish at the moment, around $1.20 for £1 so it's expensive over there. I made the mistake of buying nappies there - $15 for 24! Wipes are $4/5 a pack so take your own. Food and drink is also expensive, $8 for a pint of ale, $9 for a glass of wine, $18-20 for a pasta dish. Also, the subway isn't very pram friendly as there are lots of steps and only a select few stations with lifts so pick the location of your hotel carefully. We stayed a 5 min walk from Times Square and an accessible subway stop which helped loads. Hope this is useful, have a fab time!! xxx