Cash vs card in JB — how much MYR for day trip?

RM150–250 per person day trip — lunch RM40, massage RM80, Grab RM30–50 total, Hiap Joo cash RM20. ATM Maybank near CIQ, withdraw once (foreign fee ~RM12). Cards work KSL malls and Legoland; hawker cash. Singapore cards fine with FX. Touch n Go less useful for tourists than locals. Keep RM50 small bills street food.