Given a travel related situation, and given a specific question about the situation, summarize the question into a title

Someone I know is a Swedish-South African citizen, and has a Swedish ID card and a South African passport.

He's going on the Allegro train Helsinki-St Petersburg (and back), and his documents, combined, are sufficient for this trip (Swedes have freedom of movement in Finland, while South Africans are visa-free for Russia for 90 days).

The problem is: when booking the ticket online, you have to enter document info to be transmitted to the Rajavartiolaitos and the FSB, and the system only lets you put one document per direction.

So the question is: should the person put the document to be used at Finnish, or Russian, border control?

Does it differ in each direction?

I e-mailed and called VR (Finland's railway operator), but they were completely bamboozled and ignorant about the situation, and thus of no help (they said "put in the document to be used during the journey")

Also e-mailed the Rajavartiolaitos head office, in Swedish followed by English, but haven't received a reply thus far. Would write to the FSB St Petersburg division as well, but my Russian is too poor and I doubt they'll reply to a message in English.

What travel document should a dual national register when booking the Helsinki-St Petersburg train?

My company is going on a trip to Park City, Utah in the beginning of July, Fourth of July and afterwards. What are the tourist type things like museums or photography ops to check out within a 30 to 45 minute radius of the area? I know we will do some sort of firework display just don't know what yet. We will be there a week so I have about 8 or so days to play with.

Park City, Utah for vacation

I will arrive at Delhi Indira Gandhi International Airport at 2:45 AM, I plan to book my next domestic flight to Leh with GoAir which will depart at 8:30 AM. Is 5 hours enough time to clear all the customs and go to the domestic airport?
How long is the customs process in Indira Gandhi International Airport?