Customer Success in Benelux Region

I am currently exploring the European (esp Benelux)  Customer Success industry in depth. Trying to understand the strategies that worked in customer onboarding and advocacy. Which engagement practices work to maintain a successful rapport with the customer? How open are the B2B clients to unconventional retention ideas? Has anyone experienced any client behavior/pattern/requirement which was different from the US market? 
Please share your experiences. Thank you