The useful question is not "is this country accessible" — it is "is this stop accessible, and how does the client get from the vehicle to it". Across all four of our destinations the variation within a country is far larger than the variation between them. A world-class step-free metro can deliver a client to a temple with forty uneven stone steps and no alternative route, and both of those facts are true of the same city on the same afternoon.
That is why a country-level answer is worthless to an agent and a stop-level answer is worth a great deal.
四つの目的地の位置づけ
日本 has the strongest transport infrastructure of the four by a wide margin — lifts, tactile paving, staff assistance as a normal booked service rather than a favour, and accessible rolling stock. The constraint moves to the heritage sites: older shrines, temples and castles were built long before any of this, and many cannot be adapted. Our Japan accessible travel guide goes into the detail country by site.
韓国 is comparable in the cities, with well-equipped metro systems and modern buildings, and the same heritage constraint at palace and mountain-temple sites. Intercity rail is strong; the gap is typically the last few hundred metres.
タイ is the most uneven of the four. Modern malls, newer hotels and airports are generally well provided; pavements, older buildings and many temple complexes are not, and a kerb without a ramp ends a route as effectively as a staircase does. Private accessible vehicles are the practical answer here far more than public transport is.
インドネシア requires the most planning and the most honesty. Provision is improving in the international hotels and newer developments, and it is limited elsewhere; island transfers and boat access add a layer that needs specific, individual assessment rather than a general assurance.
The common factor: in every one of the four, the vehicle solves more than the infrastructure does. A properly equipped private vehicle with a driver who has done this before removes most of the problem in all four destinations.

見積もり前に確定すべきこと
Vague requirements produce vague provision, and this is the area where that fails hardest. What a DMC needs is specific:
- What is the actual mobility need? A folding manual chair, a heavy powered chair, a walking frame and limited stamina are four different operational problems with four different answers.
- Can the client transfer from chair to vehicle seat unaided, with help, or not at all? This decides the vehicle type outright.
- What are the chair's dimensions and weight, and is it powered? Battery type matters for the flight as well as the transfer.
- Is a travelling companion providing personal assistance, or is that expected from the supplier? These are very different contracts.
- How far can the client walk or self-propel on an uneven surface? Most itinerary failures happen in the gap between the parking space and the door.
- Which stops are non-negotiable for this client? That is what to verify first and, where necessary, substitute.
できないことは楽観的にではなく明確に
The worst outcome in this work is a client who arrives to find that a site they were promised cannot be reached — worse than being told in advance that it cannot. Some sites genuinely cannot be made accessible, and a supplier who will not say so is a risk rather than a can-do partner.
Our practice is to verify the specific stops, offer substitutes of equivalent quality where a site does not work, and be explicit about what is partial — a site reachable to the courtyard but not the inner hall, for instance, is a partial yes and should be sold as one.
Explera の対応
We assess per client rather than per country: the vehicle specified to the actual equipment, drivers briefed on the transfer rather than just the route, hotel rooms inspected rather than taken from a booking-engine tick-box, and the route from the parking space to the door checked on the ground.
Send the Explera trade desk the specific requirement and the stops that matter to the client, and we will tell you which are yes, which are partial and which we would substitute.

よくあるご質問
Which of the four destinations is most accessible?
Japan and Korea have the strongest transport infrastructure. But the variation within any of the four is larger than the variation between them, so the meaningful answer is per itinerary rather than per country.
Can a powered wheelchair be accommodated?
Usually, with the right vehicle specified in advance — which is why dimensions, weight and battery type are asked for early. It is not a detail that can be resolved on arrival.
Are heritage sites accessible?
Often only partially, in all four destinations. Many were built centuries before accessibility standards and cannot be adapted. We verify per site and say plainly what is partial rather than describing it as accessible.
Is public transport a realistic option?
In Japan and Korea, frequently yes. In Thailand and Indonesia, a private accessible vehicle is usually the practical answer, and the last few hundred metres is where the planning effort goes everywhere.
Does a client need to travel with a companion?
That depends on the personal-assistance requirement, which is a separate question from transport. We ask it explicitly, because supplier-provided assistance and companion-provided assistance are different contracts.