First. Check the batch numbers.
Second. Mix some paste at home saving you some time, instead of watching Fatima Whitbread.
Set off early, saves time otherwise spent sat in traffic.
Assuming the walls have already been sanded down and sized or lined...Set your boards up, Measure lengths, cut on boards, paste a couple and whilst allowing to soak, strike a vertical line down the wall for your first length and try to have it so you work towards the doorway and away from the light. Hang your first length, sponge off paste at the top and skirting, then, paste another, hang the next and that's it. Probably the easiest paper to hang.
To spice things up for myself, I write times on each wall at the end of a run before I start ( I know, i know, sad but..) i.e..first wall at the end, 10am...second wall 12-15..third..1.45 and last wall 3.30pm.
So you'll be finished for about 4.30.
Get stuck in.