Traveling in slow season, expect lines will be short, but would like to know if there is a limit to the number of rides you can use DAS for? Also, can you ride and repeat?
There is no limit to the number of DAS return times you can get over the course of a day, but you may only have 1 active at a time. So if lines are relatively short, and you return at or near the return time (rather than 2 hours later), you could conceivably get several over the course of a full day (rope drop to close).
You may ride and repeat as long as you get a new DAS return time (not exactly ride/repeat immediately), connect a FP+ with a DAS return time, or standby then DAS return time.
You can only have one return time active at a time on the DAS card. There's not a limit to how many actual return times are used during your trip.
When you ride your ride the return time is crossed off, so you'd need to get another return time on the card or use a FP+ for riding it again immediately. If the standby lines are short you could just jump in there too. Anything with a wait of about 15 minutes it seems they let people right through.