I read a while back that you could use your own tubes on the lazy river of SAB, if they were transparent. Has anyone brought their own lately and were they ok with it? The ones I have are pink and yellow, but are still transparent. Do you think they would let me use these? I don't want to pack them if they won't let me use them. The daily fee for the tubes is pretty high and I don't really want to pay that much to rent them. If you have any info on this, I would love to hear it. Thanks!