Yes, I did the entire thing solo. My strategy for the cat petting was to mark each cat with a symbol and then stand each character beside one cat targeting their cat. I chose the symbols and cats used based on my set up - I use swapping with open slot so they always go back to the same spot. Next I started with the cat with the highest needed (mine was 37483 - numbers are right, not positive on order). So for mine I started in client 4 and did 1 pet, then swapped to client 2 and did 1 pet, and repeated until I had 4 pets on 4, 3 on 2, then did 1 pet each on 2, 3, 4 - and then did 3 pets on each 1, 2, 3, 4, 5 (I did these in order from 1-5 and by the time I got back to 1 the pet action was done and I could do it again). It took me 2 attempts to get it, and I will say I had pretty easy numbers.