I did mine with a secondary account on the same PS3. Get a ticket - birthday, 1000, level, etc. - send it to my second account, save that to backup drive, then every day I send my main account a free gift of some ticket or other (along with 5 paint chips and 5 tuning items, of course). No grinding of tickets necessary, you get to keep everything you get, and you have a reason to log into your second account every day. Or not - you don't have to. And once you've sent a bunch of tickets and paints over the days, you reload your saved data from the USB drive and start doing it again.