This answer is based off actual experience (I asked this exact question in middle school).

I am basing this off of my German teacher's pronunciation whenever I showed her the module in 7th grade (1993) (yes, I was in 7th grade when I bought that box set - and in 8th grade when I bought I, Strahd. She said this:

Strodd fon Tsar Oh Vichks (She was a dual citizen German/American; name was Frau Patrick). She said, however:

This name isn't really German. It is more Slavic-Czech-Croat. But we in Germany know all the Europeans so we would pronounce it in their way.

CHKS is like combining the CH and the CK sound. It was taken from Old Germanic - and is now called High German. That is what they teach in German classes. Adolf Hitler - yes... that guy, didn't like his troops having trouble understanding each other. Whenever he unified 'Germany' he had one language instilled as the central language.

Now, I doubt that the CHKS sound would be prevalent in further Eastern Europe. Whenever I visited Serbia and Bosnia on vacation in 2006, every person that I met and talked to, and worked with prior to that vacation; whom 75% had a VICH in their last name, literally pronounced it with a CH, not a CK or a CHKS.

I worked with a Bosnian with the last name Tahirovic. I worked with a Serbian with the last name Filipovic. And I worked with an Albanian with the last name Ibrahimovic. All three of them, and literally every one else with a VIC in their name, pronounced it VICH.

I believe Strahd to be literally pronounced as it is spelled. Str-odd. Von would be with a hard F sound or a V sound. Last name would be Tsar-OH-vich. All Bosnians I know emphasize the OH sound before the VICH. Zar would be as heavy as the O, and Vich wouldn't be as hard as the O either.

Hope this helps.

This answer is based off actual experience (I asked this exact question in middle school).

I am basing this off of my German teacher's pronunciation whenever I showed her the module in 7th grade (1993) (yes, I was in 7th grade when I bought that box set - and in 8th grade when I bought [I, Strahd][1]. She said this:

Strodd fon Tsar Oh Vichks (She was a dual citizen German/American; name was Frau Patrick). She said, however:

This name isn't really German. It is more Slavic-Czech-Croat. But we in Germany know all the Europeans so we would pronounce it in their way.

CHKS is like combining the CH and the CK sound. It was taken from Old Germanic - and is now called High German. That is what they teach in German classes. Adolf Hitler - yes... that guy, didn't like his troops having trouble understanding each other. Whenever he unified 'Germany' he had one language instilled as the central language.

Now, I doubt that the CHKS sound would be prevalent in further Eastern Europe. Whenever I visited Serbia and Bosnia on vacation in 2006, every person that I met and talked to, and worked with prior to that vacation; whom 75% had a VICH in their last name, literally pronounced it with a CH, not a CK or a CHKS.

I worked with a Bosnian with the last name Tahirovic. I worked with a Serbian with the last name Filipovic. And I worked with an Albanian with the last name Ibrahimovic. All three of them, and literally every one else with a VIC in their name, pronounced it VICH.

I believe Strahd to be literally pronounced as it is spelled. Str-odd¹. Von would be with a hard F sound or a V sound. Last name would be Tsar-OH-vich. All Bosnians I know emphasize the OH sound before the VICH. Zar would be as heavy as the O, and Vich wouldn't be as hard as the O either.

Hope this helps.