Oh that's terrible, I'd be very miserable indeed - sympathies. Since it does seem that you'll have to pay again to go and see it, and perhaps the current crop of concerts is already sold out, the following dates and cities may be worth noting, as listed on Movies in Concert.
Annoyingly I can't provide a single link that will take you directly to the search results, but if you go to http://moviesinconcert.nl/index.php?page=concertlist and type in Return of the King (no quotation marks or anything needed) then it will tell you about...
02 Apr 2015 Germany München The Lord of the Rings: Return of the King 04 Apr 2015 Germany Stuttgart The Lord of the Rings: Return of the King 05 Apr 2015 Germany Stuttgart The Lord of the Rings: Return of the King 05 Apr 2015 Switzerland Lucerne The Lord Of The Rings - Return of the King 'Live' 06 Apr 2015 Germany Stuttgart The Lord of the Rings: Return of the King 10 Apr 2015 USA New York The Lord of the Rings - Complete Trilogy in Concert: Return of the King 12 Apr 2015 USA New York The Lord of the Rings - Complete Trilogy in Concert: Return of the King 18 Apr 2015 USA San José The Lord of the Rings - Complete Trilogy in Concert: Return of the King 19 Apr 2015 USA San José The Lord of the Rings - Complete Trilogy in Concert: Return of the King 26 Apr 2015 Switzerland Lucerne The Lord Of The Rings - Return of the King 'Live' 12 Jun 2015 Australia Perth The Lord of the Rings: The Return of the King 13 Jun 2015 Australia Perth The Lord of the Rings: The Return of the King 19 Dec 2015 Germany Nürnberg The Lord of the Rings: Return of the King 'Live' 20 Dec 2015 Germany Nürnberg The Lord of the Rings: Return of the King 'Live'
I don't know if the ones that aren't marked 'live' mean they're not live, but I shall leave that to others to investigate
