It really doesn't strike me as a great tune for a style. It's a weird combination of modern instrumentation with tuba and pizzicato strings in certain sections. Some of the Schlager styles would work OK for the happy chorus, but it's probably unlikely to find anything that works for the verse OOTB. Maybe a polka style and play the pizzicato stuff yourself?
Things like this seem to cry out for an SMF.
Don't forget the magic that Markers can do for you in SMF play. Yes, the plus in doing these songs in Style Mode is that you can totally mess with the structure if you want to extend it, shorten it, throw in a few more singalong choruses. But that's EXACTLY what using Markers in an SMF can now do for you too. Jump ahead OR backwards to any spot in the song seamlessly.
Trying to force a style onto something as quirky as this is seldom a good fit (or a lot of work if you want the whole deal right), and often an SMF can be found or created that suits it better.
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An arranger is just a tool. What matters is what you build with it..!