I'm not going tomorrow but I always drive down to Wembley as I'm not bothered about a drink these days. What I would advise is that if you are driving then don't just choose a route in advance as it is your preferred one generally. Use Waze or similar to have live traffic information & dynamic rerouting. It can save you hours being stuck in road works, behind accidents etc.
Where do you park?
Never done the drive before, was originally planning on driving to my brothers on the edge of London (staying there) and getting the train in.
Considering picking him up and just driving now.