Shower Waterproofing

I'm almost ready to tile but not sure what to do about all the seams. I used the Redi wall boards and Tile Redi shower base with their waterproof sealant between all the boards and over the screws.

1. Wall to ceiling - do I use mesh tape? Drywall tape? Thinset or regular plaster?

2. Left shower wall to drywall - I think thinset under and over mesh tape. There's a tile coach video on this.

3. Right shower wall outside corner - not sure

4. Right shower wall to drywall - not sure

5. All the other seams - I think with the tile ready system I don't need waterproof tape on all the seams? Do I need more sealant though? Should I tape anyway?

Thanks!