Spent a morning there on my trip to Dublin last year. Was excellent as it gave me an idea of how best to search the indexes (just) before they went on line. As many Irish names have multiple alternative spellings, I would still recommend it for anyone who can get there that is having difficulty finding family as seeing the alphabetic lists can be easier to find names that have been misspelled.
I guess it's rather quieter now that most people can do a lot of their searches on-line for free, although 2 euros for a five-year set of one type of index (B, M or D) really isn't expensive.
Sadly, I've been busy this morning so only saw bits of the programme and I've several questions, which may of course be answered if I can find time to watch again on I-player later.
First, the research room only issues copies, as far as I know, and so you would need to nip across to the Registry Office for certified copies (more expensive). Did F&F need to get certified copies for legal purposes or are the photocopies sufficient?
Also the Research Room will only produce 5 copies on-site in one day for any researcher. Was that enough or did F&F have to wait for more to be mailed out, or was this dealt with by getting the certified copies instead?