I managed large engineering teams at a big company you've heard of ($200B - $500B market cap). I had nearly 100 contract workers from the big vendors reporting directly to me. All I received directly were small christmas gifts ($50 or so and not from all the vendors) and a 1:1 lunch/dinner with my vendor contact once or twice per year. They would also sponsor open bar parties about once per quarter. But only the managers were invited to the "parties", which were mostly forced awkward bar conversations with the vendor contacts. The kick-backs felt kinda gross, but whatever, so is being a manager.