At the same time however SeaHelp also informs all interested in Croatia on Water Skipper about the current state of the law in Croatia Also at the Open House of the maintenance depot Diskontmarin in Graz from 27 until 29 March will be SeaHelp represent and inform visitors about all the knowledge values what in the upcoming season in their favorite water sports area of Croatia in the first year after accession to the EU comes to you

What is the correctly punctuated version of this sentence?
At the same time, however SeaHelp also informs all interested in Croatia on Water Skipper about the current state of the law in Croatia. Also at the Open House of the maintenance depot Diskontmarin in Graz from 27. until 29. March will be SeaHelp represent and inform visitors about all the knowledge values, what in the upcoming season in their favorite water sports area of Croatia in the first year after accession to the EU comes to you.