Hello,
many German players 1st deposit is not more as 20, 50 or 100 Euro. They don’t care about thousands of bonus. German Roulette players know, that a sticky bonus is a risk if the terms and conditions are not good for this game.
If anybody ask me, i suggest him to speak or write with an operator before making the 1st deposit, never getting any bonus.
But bonus is still a gift (if it is not sticky). In real Casinos here in Germany you can be happy if you will get free entry and maby Sunday afternoon a cup of coffee and a piece of cake.
But only until 18:00 Uhr in the evening or all cake is eaten up.
And this offer………..
ONE time a month!
Boss Media bonus for example is real money if you know how to handle it in an intilligent way.
I can’t remember, which casino…
But one year i became a deck of cards with regular mail.
A nice suprise.
For a deck of cards you must pay 5 Euro here in the real casino. 
Leopold