John,
You can forget about any ameneties or upgrades at the Lv Hilton. I was there 2 months ago and the Front desk Mgr told me they don't participate in any of the benefits of the HHONORS program. I am diamond and this meant no upgrde, no comp breakfast etc.. They do not have an exec floor as well. I would stay clear of the Hiltons in LV as even Hilton Corp. can't do anything about this problem.