I believe it is overkill to say no raw vegetables forever. It is a very individual experience. I have heard that with the ileostomy there is a higher obstruction risk, but once it is taken down, that risk is very much reduced.
I would not encourage anyone to restrict their diet any more than is necessary for them. Some people have lots of problems, but most do not.
I eat raw vegetables daily, and had salads while still in the hospital. Mushrooms, cooked or raw, can cause partial obstructions for me, but I still eat them.
Also, careful with the Gatorade. It is not designed to be a hydration fluid for GI problems, but as a sports drink. There is too much sugar in it to drink a lot of it. A lot of sugar promotes diarrhea. G2 or no sugar types are OK. You can also dilute gegular Gatorade 50%.
Jan