No. This is specifically spelled out in the terms. Not sure why people ask stuff that simple research on their own would answer without ambiguity. The reason you have to book through Hyatt is so you pay the grossly over inflated prices for SLH properties as opposed to often 20-50% cheaper rates easily found elsewhere. SLH is largely and usually worthless as a value proposition for Hyatt unless you use points, which are often unavailable anyway.