"No specific forum reports of verification incidents found for the Disney Hilton code. Disney has one of the largest US workforces, meaning the code is widely distributed and hotels near Disney properties are accustomed to seeing it. Hilton's general 20% verification rate applies. The large and diverse Disney employee base makes stringent verification less practical. Fishbowl discussions about hotel codes focus on consulting firm codes, with Disney not emerging as a frequently discussed verification concern."

"Bosch code 315000125 is an industrial-sector code. A live booking test found the Bosch Hilton rate "not available" during testing periods. Codes that rarely resolve to a live rate are also rarely verified — you cannot be caught for a rate that doesn't apply. When it does resolve, Bosch is an industrial-sector code similar to BASF and Siemens, which cluster in the low-enforcement tier at Hilton."

"Berkshire Hathaway's Hilton code N0437015 is a holding company code. Berkshire Hathaway itself has very few direct employees (fewer than 30 at HQ) — most employees work for subsidiaries (Geico, BNSF, etc.) that have their own corporate codes. No FlyerTalk thread documents BRK Hilton verification incidents. The holding company code is rarely used since most Berkshire subsidiaries maintain separate travel programs. Minimal enforcement expected."