Ah yes, I meant zip ties. I bought a job lot from the local flea market in about 6 different sizes. Several hundred for £1 - bargain! (And very useful too. I used to carry 5 or 6 with me on the bike.)
And in a plastic bag or laminated - for when it rains - yes!
TBH - I found the whole route sheet and map thing spoiled my enjoyment of the rides. I was having to think too hard to keep track of where I was, especially because the calibration of my bike computer often didn't agree with the organiser's. The further I went, the bigger the fiddle factor became. I'd read that there was a left turn down a side road after 164.7 km but have to add or subtract (say) 0.9 km from that number.
After a couple of 200s, I gave up and started using GPS and felt much more relaxed when I was riding. I just carry the sheets and a map for backup now in case the GPS goes wrong. (It hasn't, in several thousand km.)