I finally received my reservation, I will be travelling Mexico-Narita-Kansai April 2nd to arrive April 3rd

!!!
Also, some recommendations from yesterday's meeting with ex-MEXT:
1. For those staying at a cheap dorm, save money, you will need it for when you need to move out of the form. Don't spend it all!
2. If someone gives you a bike, before accepting it check at the police station if it doesn't have a stolen report or if it doesn't have unpaid fines.
3. If someone offers to give you their TV, wash machine, etc, because they don't use it/are moving out, check first if it works correctly, and if you are not receiving a bigger problem. Getting rid of those things cost a lot of money in Japan, so people prefer to give them away, but it might become YOUR problem to get rid of it.
4. MEXT scholarship money is deposited through Japan Post Bank, be sure to open the account as soon as you can.
5. Everyone should get assigned a MEXT sempai-tutor, they get paid to help you the first 6 months you are there, so don't be shy to ask for help.
I think that was the most important part of it all

everything else was as has been discussed before.