Yes, you can absolutely drink water on the Shinkansen (Japanese bullet train). In fact, eating and drinking are perfectly acceptable and a common part of the Shinkansen experience. Most long-distance trains are equipped with tray tables specifically to accommodate meals and beverages. Many travelers purchase "ekiben" (station bento boxes) and bottled water or tea at the station before boarding. While drinking water is normal and encouraged for hydration, there are etiquette rules to follow: you should avoid bringing drinks in open cups that might spill, and you should take all your trash with you when you exit. While some locals also drink alcohol or beer on the train, it is generally expected that you do so in moderation and do not cause a "meiwaku" (annoyance) to other passengers. Smoking and loud talking on phones, however, are strictly prohibited in the seating areas.
Interestingly, there are no foxes on the Aran Islands (Inis Mór, Inis Meáin, and Inis Oírr). The islands' wildlife is distinct from mainland Ireland due to their isolation. While you will find plenty of rabbits, lizards, and even the occasional stoat, the red fox never established a population there. This lack of predators has created a unique ecosystem for ground-nesting birds. However, the islands are famous for their Grey Seal colonies, which can be seen year-round sunning themselves on the rocks. For visitors in 2026, the absence of foxes is a notable trivia point, as these animals are ubiquitous across the rest of the Irish landscape, yet remain entirely absent from these limestone strongholds in the Atlantic.