Directions to Conference
How to reach "Kashiwanoha-campus (柏の葉キャンパス) Station" from airport
If you stay at "Mitsui Garden Hotel" or "Sun Oak Hotel", Kashiwano-Ha Campus Station of Tsukuba Express Line is the closest access point. But it is rather difficult to take the train if you are not familiar with transportation in Tokyo. The Airport Limousine Bus arrives at the Kashiwano-Ha Campus Station.
How to reach Kashiwa-campus from "Kashiwanoha-campus (柏の葉キャンパス) Station"
Take Nishi-kashiwa 03 for Nagareyama-otakanomori Station, and get off at Todai-mae stop.
Take Nishi-kashiwa 04 for Edogawadai Station, and get off at Todai-mae stop.
About 25 minutes' walk.
[NOTE] There are two U-Tokyo campuses around the station. The workshop will be held at "Kashiwa Campus", not at "Kashiwa II Campus".
How to reach Kashiwa Research Complex 2 Building
Please see Enlarged Map (Kashiwa Campus part).
Getting a SUICA Rail Pass or Equivalent
You can get a SUICA card or equivalent at an arbitrary train station including the JR station at Narita, Tokyo Station etc. The charge lasts for 10 years or more. They can be bought at a station window, or better yet, a vending machine for 2000 yens with 1500 yen deposit. They can be recharged at any train station. See here for more information on how to get a SUICA card.
In Tokyo private company lines other than JR sells their own version of SUICA, called PASMO. Contrary to what some websites say, they are effectively totally compatible with SUICA, including use and charge. They can be obtained at subway stations etc., in the same way as SUICA. Both SUICA and PASMO are effective for ALL trains, most busses, many taxis, throughout Japan. See here for more information on how to get a PASMO card.
For going about in Tokyo continuous internet connection on a smartphone is essential. Local SIM cards can be obtained easily at the arrival airports. They can be obtained at many other places in town but it will be more complicated, so it is best to get one at the airport. Another option is to rent a Wi-Fi router at the airport. They can be as cheap as a few dollars a day and will retain your voice capability. There are several stores at the airport with different plans so it is best to compare. Here is a good site but it makes it sound more complicated than reality. The situation is getting better constantly with the 2020 Tokyo Olympics.