Someday*
The best part of going to the factory to take photos of the boat being assembled is not just for the photo shooting, but to be able to chat with the factory people (the ones that actually have hands-on building the boat) about what they are doing and why they are doing it in a certain way etc.
Yes, knowing where all the wires, tubes, pumps, and hoses are is important at any time later on during ownership if you're about to make a modification or drilling a hole somewhere.
It also gives you the chance at the factory to ask questions about things on the boat. When I was at the factory, I found (actually, I was told) they were building me an R29 S rather than an R29 CB. The central office had not sent the factory my change order from my original request for a R29 S to the R29 CB. It was kind of funny to some extent, and I ended up with some of the R29 S options that I had dropped when changing to the R29 CB.... I was fortunate in this regards.
When the boat is fully assembled many things are simply hidden from view, and knowing what lays behind bulkheads, or where a hose starts and ends can prove to be very useful, and avoids having to call the RT tech team for advice.
Also note, that every boat of a particular model being built will not be exact replicas. The factory and RT typically make changes on the fly to some extent, and for example, on one boat the depth finder will be located at point A while on another identical model it is relocated and positioned in another place B. Because of this when calling back to RT tech team later on (could be a few months or even a year or two), it's not always clear where a certain component maybe located. Taking photos as the boat is being built resolves this aspect to a large degree.
Typically, the battery locations end up being in somewhat concealed places, making them hard to see and remove later on. Noting how they are attached to their base starboard supports and noting where the bolts/screws are makes removing the batteries easier knowing which screws can be removed allowing the battery bank to be slid into view, and with the connecting battery cables having enough slack allowing for the battery removal(s).
Knowing where the Webasto diesel fired furnace is located and what screws/bolts to remove safely when needing to repair it also helps.
At one point I noticed one of the electrical sockets for the down rigger was misplaced, and noting this, allowed for it to be corrected before the boat was delivered to me.
All I can say is, that if you're in the area of the factory when your boat is being built, it is very worthwhile asking RT to allow you to visit the factory. I'm lucky in that I'm no further than a 30 min car ride to any of the factories they build the R23OB, R25OB, R27OB, R29S/CB and the R31 S/CB models. The R41/43 is another matter being further away from me, thank goodness. :lol: