Why?
Trading platform would do the home works to
Find best solution.
I dont know to avoid forking with which wallet
On the one hand it risky to leave coins on exchange around Aug 1st, but on the other more trading opportunities can occur from all of this BIP and SegWit stuff.
So the only question is what risks every single person is ready to take during this period.
About what risks you talk about? You need to have safe place for your bitcoin in any case. I'm not sure, but from some articles and comments looks like hard fork and splitting coins will not happen, but what is the problem to send bitcoins in some hardware wallet.
In times like this now when price is oscillating some exchange sites can crash, that happened before, advice to move coins from exchange wallet on safe place nobody should take easy, who knows what can happen in just couple days or even faster, can you see that price gone up like a storm, that is not good for everyone.