"Siemens (16605) appears in the FlyerTalk Hyatt discount code master list alongside GE, IBM, and Samsung. One contributor wrote: "GE generally works best, followed by IBM, but sometimes the Siemens and Samsung rates will amaze you — 70% off at the Grand Hyatt HK with Samsung." A user claiming ~40 uses across 10 countries with similar tech-company codes: "asked for ID about 50% of the time" — primarily at Park Hyatt and Grand Hyatt properties in Asia. Hyatt Place and Hyatt House in the US: essentially never checked. Park Hyatt properties in global capitals: near-certain check."

"I mean, you can book the rate, but 100% PH Tokyo requires proof of employment. I had to email from corp domain and provide a business card (Dec 2022). If you show up and can't provide proof of employment, either you'll be paying a very expensive full price for your stay, or they'll invalidate your reservation."

"I have a reservation in DC this weekend (11/14) and the LTO110 code showed up for it when I rechecked availability/rates. A call to GP customer service verified the rate and dropped the price 10% below what I'd previously booked. It does require a bit of clicking about on the site, but it's there. Under 'reservations', hit 'specials & packages', then the 'hyatt special offers' tab. The link to the LTO110 rate is the fourth one down."