Check out the Shacke hidden wallet on amazon for your passport and important stuff. I used it for travelling through Latin America for 2 years and never once got pick pocketed. You just need to wear a belt, flip it under your pants and it sits pretty comfortably on your hip. I find it more comfortable than wearing a money belt.
Edit: Its obvious some people here don't require this kind of thing for their 2 week luxury vacations. This is only for backpackers.
This has been my daily use wallet for over a year now. It loops into my belt when I want extra security, and even overloaded it was still comfortable in the same pocket as my phone.
Shacke Hidden Travel Belt Wallet... https://www.amazon.com/dp/B00Z2AKO3G?ref=ppx_pop_mob_ap_share
The bigger concern I'm worried about isn't what to carry, but what to carry it in, since I don't have any shorts with zippered pockets and I've heard some parks aren't even allowing fanny packs on some rides.
I have a hidden pocket I can use, but I imagine a ride that doesn't allow fanny packs wouldn't even allow this if they caught me with it.
I bought a hidden pocket that I'll be using for my trip in May. I figure that as long as a ride op doesn't see me putting stuff in or out of it, I should be fine.
Get something like one of these to keep your passport safe, yet accessible when you need it:
https://www.amazon.com/Shacke-Hidden-Travel-Wallet-Blocker/dp/B00Z2AKO3G
I bought one of these a year ago and never want to go back:
https://www.amazon.com/Shacke-Hidden-Travel-Wallet-Blocker/dp/B00Z2AKO3G
I have lived in NYC for years and was warned by everyone, even some NYer to be aware of the pickpockets, "The Romans are especially good pickpockets."
Honestly no issues. I felt more comfortable most of the time than I do here in some parts. If you're worried buy one of these:
https://smile.amazon.com/gp/product/B00Z2AKO3G/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1
Keep the really important stuff in that, and use your regular wallet to carry a little bit of spending money.
Now the guys trying scam me bracelets along Via dei Fori Imperiali...
"Hey Mike Tyson, are you African?
That really threw me off as I'm white.
If you
There's the Cache Belt https://www.wazoosurvivalgear.com/cache-belt-more-than-a-money-belt/
but you've only been able to preorder it for god damn three years now, and that's held me off from ordering it. Other than that a whole bunch of rando hidden money belts on amazon where you unzip a pocket along the inside of the belt, but that's rather annoying. Its perfectly fine for if you want this as emergency money, but as a hidden wallet it doesn't work so well.
Alternatively, and what I used for my trip through europe, is this: https://www.amazon.com/Shacke-Hidden-Travel-Wallet-Blocker/dp/B00Z2AKO3G/ref=sr_1_5?s=apparel&ie=UTF8&qid=1527802723&sr=1-5&nodeID=15743861&psd=1&keywords=belt+wallet+hidden. TSA didn't care, and you can fit your wallet, passport, money, a bunch of things in there. You slide your belt through it, and then tuck it inside your waistband. Totally invisible other than that band where it attaches to your belt. Its a bit awkward to take out, but you don't have to take off your belt at least.
I think this will work well for guys. http://www.amazon.com/Shacke-Hidden-Travel-Wallet-Blocker/dp/B00Z2AKO3G/ref=sr_1_1?ie=UTF8&qid=1461033773&sr=8-1&keywords=belt+wallet