Hoping someone can answer a quick question:

Unlike previous travels, I didn't exchange money ahead of time.

I heard this hotel has an ATM/currency exchange on the premises. Is that correct?

Assuming it is, I'll just need money for a taxi/Grab ride from Changi Airport to the hotel.

Do most taxis accept credit card or Android/Apple Pay?
If not, are there multiple currency exchanges in the airport that would allow me to get money to pay for the taxi?