A few tips if you are working with a friend.
1) When buying TD tickets, both of you should choose a "ticket for myself" and "another ticket for myself". Never choose your friend by name when buying TD tickets, because then your lists will conflict with each other. After both wish lists are processed (you have an hour I think), then decide which events to keep and which to drop from your cart.
2) Since wish list maxes out at 50, I typically put different runs in each person's wish list. The idea is that between the two of you, you can try to get as many as 100 different runs. This is particularly important if you are trying to buy full runs of 10. For just 2 tickets it is not as big of a deal. So if I really want to do the N1 run at around 10AM on Friday morning, I would take the 5 or 6 runs starting between say 9:30AM and 10:30AM and alternate them between the two wish lists. So one would have 9:36, 10:00, and 10:24, where the other would have 9:48, 10:12, and 10:36.
3) Put your preferred items earlier in the wish list, and try not to get strange overlaps. For example, let's say that you are trying to get two runs in and you have 1PM to 7PM available. Generally you shouldn't care too much about the order, but let's say you want N2 before N3. I would list all N2 runs starting from 1PM to 2PM, then all N3 runs from 4PM to 5PM, then N3 runs from 1PM to 2PM, then N2 runs from 4PM to 5PM. If I have the space in my wish list, I might then list both N2 and N3 with start times between 2PM and 4PM, but after all of the others, because if I get one of those I'll only be able to fit one run in that window instead of two.
My online token shop:
www.tdtavern.com
We buy, sell, and trade True Dungeon tokens. We also have a convenient consignment program where you can sell your own tokens.