Join Date: Dec 2009
Location: Gran Canaria, Singapore, Surfers Paradise
Programs: KrisFlyer Gold to Silver to Blue, Finnair Silver, Royal Caribbean Diamond, GHA Platinum
Posts: 5,500
Definitely get them exchanged, don't waste your money. You can also exchange any coins you may have so bring everything with you.
Keep in mind that you can't do the conversion at just any bank, so do a search on where the Bundesbank has its offices that offer DM >>> Euro conversion.