If available it's better to see a Sunda Pangolin during the keeper chat. The trainer will bring one out in front of an audience. Make sure to get front-row seats.
@RatioTile That is how the San Diego Zoo exhibited their pangolin also when they had one. It made for a very engaging demonstration of pangolin behavior and lifestyle.
@DavidBrown with this new exhibit, the pangolins do seem a lot more active. I also understand that the keepers rotate the animals on exhibit throughout the night to keep them active.
As mentioned by @RatioTile the keeper talk is another good opportunity to see the pangolins active. The talks are currently suspended due to COVID-19 social distancing rules though.