Class timings usually depend on the instructor or platform, but most courses offer multiple batches, including morning, afternoon, and evening sessions.
Many programs also provide classes that adjust to your local time zone (Australia), so you can join without time-difference issues.
If you tell me which course or platform you mean, I can give you the exact timing options.

Most classes keep the group small, usually around 8–15 students, so everyone gets personal attention.
Conversation sessions are often even smaller—about 4–8 people—to make speaking practice easier, comfortable, and more interactive.

A payment method is required so the system can verify your identity and prevent misuse of the free trial.
Yes, the trial is still 100% free — you won’t be charged during the trial period.
It only charges you after the trial ends, and you can cancel anytime before that with no fees.

Good question. If you don’t have a credit card and Hey Lady! can’t accept PayPal in your country, there is another option:

They offer manual international bank transfer. help.heylady.io+1

If you like — I can walk you through how to request that payment-by-bank-transfer option (step-by-step) to make it easier for you.