Ahh yes, always take the PDP, especially after the new security procedures.
Besides a PDP (or PDU if you want to be technical), I really don't do anything special.
Probably the only weird thing I do is set my travel alarm clock, my 'white noise' machine alarm, the hotel alarm and my wristwatch alarm on layovers.
I'm mega paranoid about sleeping thru pickup so knowing that I'm going to have a cacophony of sound in the morning helps me sleep a little better. Else, I'm up every hour making sure I have it set correctly.