Well, that link certainly cleared things up, no? Look, there are very few laminates that are recommended for wet or potentially wet areas. But, if you insist, it's better to have as few cut ends and side as possible. Therefore, it's best to lay the laminate under the toilet as snugly against the waste pipe as possible and replace the toilet over the laminate. I'd run a bead of bathtub type acrylic caulking/sealer around the waste pipe/laminate joint... same goes for under the sink, as well as the space where the toilet sits on the laminate. Use a wetted finger to smooth the joint.
Here's a trick that can help for this kind of install... If your laminate is the snap together type (most are) then, just before snapping together for the final lay, run a bead of common carpenter's white glue along the seam before snapping it in place. This will waterproof the seam. Keep a damp cloth nearby and lightly wipe off any excess that oozes out of the snapped joint.
Best of luck!