Whether WeChat payment can be used at Osaka Universal Studios depends on the specific payment scenario.

1. Purchase tickets on site. According to information on the official website of Universal Studios Osaka, tickets can only be purchased with cash or credit card, and WeChat payment is not supported.

2. Purchase tickets online. If you purchase tickets on the official website of Universal Studios Osaka or other officially authorized online platforms, you can use WeChat payment.

3. On-site shopping. WeChat payment can be used in some shops and restaurants in the cinema, but it depends on whether the merchant supports WeChat payment.

In short, whether WeChat payment can be used depends on the specific payment scenario and whether the merchant supports WeChat payment. If you need to use WeChat payment, it is recommended to confirm in advance whether the merchant supports it, or choose other payment methods.