The interview process for direct entry pilot is a short technical questionaire a sim assessing basic flying (raw data) and a non precision approach. The guys look for briefings crm and general behaviour. Nothing special.
I cannot speak about easyjet but I hear that their rosters are not what we have. We do not fly over Christmas day (shop is closed) on Christmas eve we finish much earlier, and on boxing day we start much later than usual. Flying is 5 on 3 off (5 earlies then off 5 lates then off), it is the same type of flying as easyjet do, 4 sector days and some times 2 sector days like Palermo and back. Money is good, and I take home after tax about 5500 GBP (LTC).
Good luck to you, depends what you want to fly, the bus or the 737
JP