I never use Skype video calling, simply because I dont have a need to, but on my trip to chch I've planned to set up a webcam and mic at home, take my laptop with me and video call home to surprise mum because its her birthday while I'm down there and I'm staying with her family. Ill use my uncles Broadband connection if I can but if the video call will use alot of data (he only has a 3GB plan which he uses for work related stuff) I might just get an extra 2degrees data pack. The video call will be about 20-30mins roughly. 

Thanks, Sam.