I'd stick a couple quid on us at least having stage splits, if not day splits. Potential clashes are fairly easily inferred from either.
I feel like we've had this conversation before! But I share your concerns. The barn is supposed to house 10K, so surely there's going to be exits for fresh air/bars/toilets. Interesting to see how the atmosphere is kept if there's a few of these openings. It's a shame there's so much I want to see earlier in the day, might be hard to strategise before it gets busy.