First off, Congrats on graduating!
Second, double congrats for having the courage to move forward and head off to college. It is a huge step.
There are no 2 pouches or pouch experiences that are alike.
Your best bet, especially now in the very begining of your pouches life is to keep a food diary or journal of everything that you eat, drink or take...when, where and with what else (certain foods and drinks or meds will have different effects on you depending on the combinations).
You will eventually see patterns develop that can give your precious keys to what your new plumbing likes and does not like, which foods work best for you and in what combinations and which meds (if any) you need to keep things calm and happy.
Do not forget to write down when you eat or drink things...it does matter.
An example for me with my k pouch is that I have orange juice, water and coffee every morning with my meds and vitamins...that is what my pouch needs to get cleaned out (it works like draino on my Kpouch (I have to use a tube to empty out my pouch so things need to be liquidy))...If I eat anything in the morning it blocks up my system so that is my routine and has been for over 20 yrs...but I cannot do that in the afternoon or evening...it would kill me...needs to be done in the a.m. on an empty stomach...at night it just burns.
The most important thing for me since I got my pouch over 35yrs ago was to find my morning routine so that I was free for the day. Once I had that I had a form of pouch stability.
You may find that toast with peanut butter is your best breakfast food or a bagel...a lot of j pouchers do well that way.
You will need something that keeps your pouch calm and stable but gives you lots of energy so test things out this summer and remember that it is still a baby pouch and is subject to change regularly...be prepared for surprises.
One thing for certain is that you must beware of dehydration...it can happen fast and come out of nowhere...so drink lots of fluids...water and something that can give you electrolytes if you are constantly on the go...do not overdo coffee, alcohol or sodas or sugary drinks...take small snacks with you (certain protien bars are good in a pinch but beware of the high sugar content is some...try making your own with rice crispies and peanut butter and then add stuff that you love and that loves you)...and if you get over tired get some rest...this was major surgery and it needs time to heal and so do you.
Good luck and don't forget to have fun
Sharon