Can´t help you with spectator points as I didn´t attend the rally for ages now. But if you look for places your wife may also like there are many possibilities: bigger cities like Heidelberg or Metz, smaller cities like Idar-Oberstein or Bernkastel-Kues, the Alsace region...
How about Trier? I've been to both Heidelberg and Bernkastel-Kues. Both are nice but very crowded, especially Heidelberg as it attracts many Asian tourists.
I'm sorry for being that honest, but entries etc are not key factor for hosting a WRC event. The 1 Million euros WRC calendar fee does. All the rest is just chit-chat.
As for the USA event, let's...
First stage of the rally will be live soon, looking forward to it
[WRC] Safari Rally Kenya 2024