You have to remember that MB World is first and foremost a sales operation and as a result they tend to park their stock wherever they want. Secondly the hotel is becoming increasingly fully booked and as a result, parking there also becomes limited.
In the past we have always been able to park in the same spot but recently, the extra stock for sale has now claimed all those spaces.
This means, as in almost every other location we visit, we have to park where we can. That hasn't created a problem in the past and most people do exactly that and if they can't see anyone hanging round the car park (unlikely in wet weather), they simply go inside and look for a group - usually to be found either in the cafe or up on the top floor in amongst the AMGs