A 1GB Nano SIM Card should do for iPad for 4 days I guess?
Where do I get it at Narita Airport Arrival terminal?
How mucch would it cost?
From which Company should I buy?
Or same questions referred to TSUKIJI in Tokyo?
Additionally I might require a Micro SIM Card for iPhone G4 (old one) for national phonecalls only – just in case; where at which Price?
B-mobile tourist SIM card is probably the best bet. Check our article on internet in Tokyo here: https://tokyocheapo.com/business/cheap-internet-when-staying-in-tokyo/ There’s a link to the B mobile website.