Without the original files, all you can do is retrieve low resolution previews, which most likely are not large enough for wedding photography. Nevertheless, you can judge whether or not the previews can be used for your purposes.
Please use this plugin: Jeffrey Friedl's Blog » Jeffrey’s “Extract Cached Image Previews” Lightroom Plugin
Thanks very much I guess something is better then nothing. any ideas what kind of sizes it retrieves?
I just cant believe how screwed I am
The previews are whatever size (possibly default sizes) you asked Lightroom to create — the settings under Preferences.
OK I'll have a look thanks again for your help