Direct answer: treat the Glass Temple as a requested Johor Bahru stop
If the place you mean is the Johor Bahru Glass Temple, it should be planned as a requested stop before the Melaka hotel or final address. Whether that stop can be included, how long the vehicle can wait, the practical stop order and the final fare all need WhatsApp confirmation for the specific date.
Do not plan around an assumed shortcut, fixed extra charge, guaranteed waiting time or guaranteed arrival time. The useful starting point is an exact Singapore pickup, the temple map pin, the Melaka destination and the group's actual needs.
When asking for a quote
Send hotel, passengers, luggage and return timing together
Complete details make it easier to check vehicle fit, rest stops and timing without unnecessary back-and-forth.
Put the stop order and waiting request in writing
Write the order you want: Singapore pickup, requested Johor Bahru stop, then the Melaka hotel or address. Include the exact attraction name or map pin, your preferred visit length, whether the vehicle needs to wait, and whether going directly to Melaka is acceptable if the extra stop cannot be confirmed.
A named place without a pin can point to the wrong entrance or nearby landmark. A clear order also helps the operator distinguish a short drop-off from a stop where passengers intend to return to the vehicle.
Plan timing as a range, not a promise
The journey can be affected by pickup readiness, checkpoint flow, traffic, the requested stop, passenger pace and the final Melaka drop-off. A flight, hotel check-in, meal booking or evening plan is useful context, but it should not be turned into a guaranteed arrival time.
If children, elderly passengers or anyone who needs a slower pace is travelling, say so early. That makes it easier to discuss realistic buffers, rest needs and a vehicle plan that fits the actual group.
Passengers, luggage and vehicle fit still come first
An extra stop changes more than the map route. Passenger count, large suitcases, cabin bags, stroller, bulky items and the final Melaka hotel entrance all affect which vehicle arrangement is practical.
Share the full group rather than selecting a vehicle from its name alone. Availability and fit depend on the route, date, passengers, luggage and final WhatsApp confirmation.
A complete message avoids avoidable back-and-forth
For this route, include the full Singapore pickup address, the Glass Temple map pin, stop order, desired visit or waiting arrangement, complete Melaka hotel or drop-off address, date and preferred pickup time. Add whether the trip is one-way or return, plus passengers, luggage, stroller, children, elderly travellers and any mobility needs.
If the extra stop cannot be accepted for the requested plan, say whether a direct Singapore-to-Melaka transfer is still useful. That gives the operator a clear fallback instead of forcing an unconfirmed promise.