https://www.gibraltarport.com/schedules
Gibraltar shows Jewel 5/21/21, Explorer 5/13/21 (and several more times), Indy 6/8/21, Anthem 6/30/21 (and a few others), Jewel 8/30/21 and 4/13/22 along with Indy and Anthem in '22.
The latest final schedules
http://creative.rccl.com/Sales/Royal/Deployment/2021_2022/19069859_Deployment_Opening_Schedule_20212022.pdf
Where the ships are
http://www.creative.rccl.com/Sales/Royal/Deployment/2020_2021/2020_2021_SUMMARY_GUIDE_FINAL