1) finished 90% of the tiling last night at 1:00 am, until there was no more space to move. How soon (hours) can I get in there to lay the last seven? With minimal stepping, walking.
2) I saw on your video that you should knock out the T locks 24 hours later, two days later is bit too long. I guess they are a bit harder to get out later. I’ve also seen a few days later is ok. To knock them out, I need to walk on the tiles, which relates to the first question.
3) I dry fit all my tiles and they all fit perfectly. Except ONE tile is tight to the wall. It’s already set. Should I angle grind the edge a bit? Is it a big deal to be tight, when all the rest have 1/4 inch reveal? This particular tile is up against a wall with the vanity sitting in front of it, it will not be seen.
4) how long until last tiles are set can I grout?
I used Ditra, Schluter All Set, 6 x 24 tiles, 1/4 x 3/8 trowel.
Things are looking good! Very neat and clean job too
And since you are so neat and clean, I’d say timing of removing the clips probably won’t matter. And I would recommend giving it at least 8 hours before walking on it. And same when to start grouting fresh tile
Only reason I recommend knocking out clips next morning is because the thinset isn’t super hard and is easier to clean the joints.
As far as the tight tile….With a smaller floor like that and being porcelain, I personally wouldn’t worry too much about it. Try to scrap out what ever thinset is beside it. Cutting the tile would be a pain and probably end up compromising your waterproofing
Marble and large floors are where that is a bigger concern