I am currently a US citizen working and living abroad in another country. Later this year I will be traveling to the US to attend an academic conference. Tied into the end of the conference I will be taking a vacation in the US. My fiance, who is from the country I currently live and work in, will be arriving roughly 5 days after I already arrived.
We are staying in an AirBNB for the first 2 days, which I have reserved for the conference, going to Vegas to get married (planned not confirmed), and then travelling around the US by car as a sort of road trip, so I don't really have plans to book hotels for the whole entire trip. As whether we stop and find a hotel will often be reliant on whether or not I feel safe to continue driving for that day. We are returning to her country after about a week (following the conference).
I am a little bit worried when she gets to immigration and they ask for hotel proof this may cause problems since I will not be with her to help corroborate the story.
As a note she does have a valid a travel visa for the US and a return ticket booked.
Is it likely she will have any trouble getting through immigration in this scenario?