I took a quick video of it and as you can hear as the engine revs the ticking gets faster.

Youtube Video of it

My 2 questions are
- from what I have read online could this be valve lash
- and also if so how soon should I get it seen to as I need to go on a 4 hour trip in 2 days and I need to know asap if I need to use another car

thanks for any advice