I believe the tubes are $3.00 hr or $10.00 per day to rent at SAB. Not sure if they sell the tubes there, however, I understand they sell the noodles.
I purchased my "transparent" tubes online from a sight that a DIS member posted. Not sure which one, I saw it last week. Ordered the 42" tubes for about $3.50 ea.
If they don't allow them, we'll just purchase the noodles when we arrive. Anything seemed better than $10 per day since there are 5 of us and we plan on being at the pool everyday.