I first went in 2010 and even though it doesn't feel like it changed that much a few things that stand out. The crowd was a 'bit' more crusty, legal high stalls, raves in the market, more campsite/ SH dealers, site was less "pretty", cans sold by blokes on the railway track (still going in 2019), stages were generally just tents with speakers in.
I wouldn't get that one, it only has micro usb input. It would be faster to get one with USB-C input. have a look at the INIU ones. Also a lot depends on what phone you have got, as to whether the output speed really matters.