I posted this before, but I had to spend about a half hour to find it, so I will repost the info on this thread.
I went in 2018 and it was awesome. Here are some suggestions from a 'first timer' there.
I would say one day for the official show if you get there at the opening when it is not too crowded, and one day for the camping area, which is just as interesting as the show.
I would recommend Friday, as on Thursday a lot of vendors have not arrived or are still setting up.
I had a car, but a train is a great option. Trying to drive to the show is a nightmare++. All visitors have to take a shuttle from the parking lot, and the vehicle line to get into that can stretch for 6+ kilometers! I highly recommend staying at
Campus Bad Kissingen, Schurzstr. 2-6, 97688 Bad Kissingen, Germany +49 971 722611. These are school dormitories that they rent out. You can get a private room with a private bath. It is located less than 1/4 kilometer from the parking area where you catch the shuttle to the show. A perfect location, very clean and quiet and they have a wonderful buffet breakfast that is included. And a very reasonable price. I used Booking.com and it was 54€ per night for a private room and private bath. A very good Greek restaurant (El Greco) is less than 100 meters away.
By the way. Contrary to the normal German well-thought-out, planned, and organized way of doing things, the shuttle loading area is a free-for-all (think Bangladesh train station). No lines, no guidance, no organized bus arrival, so be prepared to be assertive to get on a bus, if you get there at the opening.
The camping area is amazing. I was there on Friday and Saturday. It really filled up on Saturday. I enjoyed it as much as the show. I had a hard time finding its location ahead of time on-line. And even when I was there, I could only find it by following Expo Vehicles, until I got close enough to find temporary signs. It is at the water treatment plant. The turn-in road is across the street (west side) from Casino 13, Würzburger Str. 27, 97688 Bad Kissingen, Germany The campground is 1.5 km from the train station, and the parking lot for the shuttle to the show is about 5km from the station.
BTW if you are flying into Frankfurt, I found it much cheaper and faster to rent a car (about 1/2 the price and time of a train). Just be aware that rush hour Frankfurt traffic is 7 times worst than Los Angeles traffic so avoid the rush hour if you want your sanity.
Also VERY IMPORTANT, Thursday, 30 May is Corpus Christi (Fronleichnam) day, and 99.8% of everything is CLOSE. No restaurants, no grocery stores, no shops. Gas stations are the only thing open on that day.
Here are some maps
(disregard map 'interest points', they are just what Google had)
The 'Afz Campus' is Campus Bad Kissingen
Parking and bus area for the show
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The camping area. I had no problem parking my rental car in the 'teal' area
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Overview of the parking for the show and the camping area
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