Hong Kong prepaid SIM cards?

I'm going to Hong Kong with my family this May for 4 days. I was wondering if there are any recommendations for prepaid SIM cards for us to use while we're there? We all use iphone 5 and 5s. The main thing we will be using is Internet so are there any brands that would be best for that?

Is data only used up when not connected to Wi-Fi?

My parents are talking about getting me an iphone. Its says on a tariff that i would get 1gb of data. Is data used up when i'm connected to my home Wi-Fi or is it just when i'm using 3g. If it is 1gb should be fine because i don't imagine ill be doing that much searching when i'm on the go. Also is data used for apps that don't connect to the internet

My iphone 4 dropped in the toilet what do i do?

I was washing my hands and I went to dry my hand on the towels next to the toilet and then my iphone slipped out of my pocket into the toilet. I quickly grabbed it wiped off as much water as i could then put it in a bag of rice. I didn't get to turn it off, but then when i tried to turn it on to turn off, it didn't turn on. Will my phone still work? It is still in the plastic baggie full of rice.

How to transfer all my music files on my laptop to my iphone without using itunes?

There's something wrong with my itunes or music app?
I try to sync new songs, it acts like it is syncing but they don't appear
and 95% of my songs on my music app on my phone from itunes don't play they just skip and are greyed out?
it is not a space issue I have 32gb and not even half is used

so is there a way I can transfer all my music files from my laptop to my iphone without using itunes?

10 points!- it is really annoying not being able to listen to music and is frustrating because I can't find a solution

If an SD card were to transfer, will my data/ plan be the same?

So I have an LG phone. It is all cracked now, and I'm wondering If I can move my SD card to another iPhone without notifying the carrier (as in, the company whom I brought the phone from). Will my plan be the same? Will they block it because they notice I switched phones? For example, if I were to switch my SD card to an iPhone, will my plan for unlimited internet, texts, call be the same?

Can I trade iPhones as long as all my stuff on it?

Cracked the heck out of my phone. My father and I have the same iPhone 4, and he doesn't even like, use his so he wouldn't mind having my cracked screen one. So can I put all my stuff on my phone on his INCLUDING the number and contacts and everything, and he puts all his stuff on mine? Basically just physically changing phones.

IPhone 5S Maps app, is it set for Fastest or Shortest route?

I have the standard iOS 7 iPhone 5S maps application and I have sometimes wondered if it's giving me the shortest route (10.4 Miles vs. 13.8 Miles), or the fastest route (18 Minutes vs. 12 Minutes). I would like to know so I can know if I'm going the fastest route or not.