Excellent! THANKS GUYS. Yes, of course, I'd do it in advance.
That's great to know because I'm very seriously thinking of getting (partial) ST for next year.
But it would be a real drawback if I was limited to never having an additional person come along.
DO IT! I bought 2 seats in a partial plan for this year, but I've only been in "my" seats for maybe 5 games. I've done a bunch of exchanges or RCR to take my entire family or a group friends to about 20 games so far this season. I have a feeling exchanges/RCR will get a tad more difficult due to availability as the STH base gets bigger.