Speaking generally, simply because it is impossible to know another's habits,
If you want to stockpile sim tickets, the obvious, do all daily actives, as well, for the daily challenges, auto them, It takes moments longer yet you save. That sim for another use. Also obvious , refresh your energy , which you are if you are hunting a specific gear or char shards, mainly gearwise, stay away from the 6 nodes, Simply because they are a wash, 20 tickets, 120 energy, equals net zero,
Now for the moment, while farming for old Ben as a prime example, one cantina refresh will give you 120 energy, BUT only 10 sim tickets, so there will def be a net negative on your sim stash farming anything under a min of 12 energy, (net zero)
As for buying char shards for crystals, gear for crystals,, players choice, however, that means you have to factor in that less refreshes will net you less sims that you can bank, and not to mention the daily challenges again, but if you sim them, that's ten per day on a regular day, overlooking the Sunday and Monday triple challenges, that's a lot gone there, especially if you are not refreshing your energy.
Overall. Specifically regarding sim tickets, if it is a desire to have a stockpile, spend a month, and everyday, and auto all daily challenges, auto the gear nodes you farm and complete all the daily activities. You will save up a nice chunk of sims, plus you will save however many 30 crystal sim packs you buy.