Safety in Sevilla, water shoes in Poland

This week I plan to begin my short trip to Spain. It means I'll finally reach Sevilla among others. Browsing the internet I came across very interesting link about safety in this old city. You may also consider this link interesting, so I decided to mention it here:

Sevilla Safety

And getting back to my US phototrip I still have a lot to arrange. One of such thing are water shoes. Till yesterday I was sure it's not possible to find such shoes in Poland, but it appeared that's not true anymore! You can find two models in Intersport chain - they've Salomon Techamphibian and Merrell Gauley. Of course my first choice was Teva, but we don't have a serious Teva dealer in Poland. It seems that I'll have to stick to Merrell. Salomon Techamphibian doesn't look well and my first impression was neutral. Or the other choice is to wait and buy water shoes in US - the only problem is time. We'll arrive late evening and the next day we've to get to Page - over 500km. It means time for shopping is very limited.
And what's all the buzz about water shoes? The problem is with two expeditions - one to Subway part of Zion NP and the other to Beaver Falls (see picture on the left) in Havasupai - never been in the first one, but lack of proper shoes was the main problem in the last one during my recent visit. Trail from the Hilltop parking to the campground is rather dry and you can use plain hiking boots until you want to take few pictures of famous Navajo Falls. The only way to get close to the waterfall is to wade through the water, put your tripod on the bottom of it and start taking pictures. You've to stand on very stony bottom all the time and if you're barefoot, it can be a bit tricky. I know it's much better to have some shoes that'll allow you to feel more comfortable. Of course you can't just use your hiking boots. You need something more specialized. One of the answer are water shoes.
The other trail, where water shoes are the must, is the path from the campground to wonderful Beaver Falls. To get there you have to cross creek many times and take your shoes off and putting on all the time. This is very time consuming and annoying process, so I definitely don't want to get through it again! With water shoes you just go and take pictures. Moreover you are on the not so easy trail, so you must have water shoes and hiking boots in one. I hope that with Vibram sole I'll feel safe and stable on the trail and in the water.