CC and Ryan. Sorry to hear you have to drop out. What a bummer. I'm sure you'll both come back strong later this year when you get things sorted. I'm doing Amsterdam in the Autumn. Big posse of us going over for that race, there'll be booze afterwards and everything. Join us!
I don't think that there'll be that much fruit on the floor when you are running 15West, there might be water bottles flying about though, but the fruit issue is far worse the further back in the field you are. I was languishing at 4h50 last year and there was enough fruit on the floor to keep a zoo going for a week, but then about 35,000 people had run on ahead so it was always going to be a bit dicey, you're starting right at the front of the field so I can't imagine it'd be much of a problem. If you are worried I would just say to keep your eyes on the ground and don't schedule a water stop at the same place as the fruit is, otherwise you're chopping and changing speed/direction and that is when you'll be at your most likely to slip.
You just reminded me of Reading the other day. I was doing my best to avoid the water stops as they do slow you down and I had a couple of gels on the belt, however it warmed up during the race and I had no choice. The first drink I went for was this woman holding a flimsy plastic cup of water. It wasn't a successful grab - I went steaming through and basically the poor lass got a face full of smashed cup and water. - I got nothing - till the next stop, a bottle, much more civilised, squirt some in, offer around to the runners around you before disposing of more discreetly.