This is excellent well rounded course covering large set of topics. The labs are helpful. Overall, the course helped me build confidence on my knowldege of full range of AWS products.
The additional topics of relevance are API Gateway, CORS, ECS, & STS. It's good idea to be familar with new stuff, and do hands on. I have built an API with API gateway, Lambda & CORS, so it was helpful.
Most importantly, the questions are situational, and although I felt I got everything right, the results showed otherwise :-)