From someone who did the WRT ast year.
We spent days/hours plotting a great route, after the third check points in the rain, we chose to cut the bottom few out, then when knackered we missed out the last couple as well.
Don’t get het up with the grid refs as they don’t get checked and are filed away in the bin as soon as you hand them over (should I have said that?)
Just plot a great ride in the area and if one or two grid ref’s are nearby then go for them. Don’t go out of your way and get stressed if you don’t do them.
Just go for the ride and adventure. But most of all enjoy it.