I want to register (i.e. wish list) a 1st round of a tournament. If there are other sessions on the same day or next, without overlap, do I register for them all? Will the wish list processing add me only to the first one I get in and bypass the rest? 

Or will it register me for any/all that I have during reg period, forcing me to delete the ones I don't want? If this is the case, then what about other events (non-tournament) that I want to select. Will they be skipped because I'm in a 2nd, 3rd or more slot of the same tournament first round?

I hope this makes sense.

The wishlist will let you sign up for multiple first-round slots and you can then delete the redundant ones from your cart before checking out.

Later rounds should not be available to put on your wishlist. They are in the catalog just so you know what time they are, but they are "invite only". It will let you buy tickets to other events in those time slots (but you shouldn't).

When you register (add to wishlist) for the first round of a tournament, how does the system handle it?
If there are other competition sessions on the same or next day, but do not overlap, the system will automatically register you for all of them. There is no need for you to register for each session separately.
The system will only register you for the first session in which you are placed. Subsequent competition sessions will be skipped without automatic registration.
If you want to select other events time calculator (not tournament rounds), the system will prioritize registering you for the first round of the tournament first, then other events. Other events may be skipped if you are booked into multiple rounds of the tournament.
So if you only want to participate in the first round of the tournament, you only need to register once, the system will automatically handle the rest. If you want to participate in additional events, consider registering for them after you have registered for the tournament portion.

I am registering for the D&D Open.  I have only selected one "round 1" time slot for my wishlist.  If I don't get it, I won't be in the open.  Since rounds 2 and 3 are invite only and I may not make it to those rounds (and also in the case that I don't get into the open at all), I have added some alternative events to take the place of those slots.

Assuming I am able to buy the ticket for the first round of the open, will the system automatically remove the conflicting tickets for rounds 1, 2, and 3?  Or will I need to remove them manually before I submit my cart?

The system will automatically register you for all sessions that are scheduled on the same day or the following day and do not conflict. It is not necessary for you to register separately for every session. You will only be registered by the system during the initial session that you are assigned to. Subsequent sessions will be skipped if there is no automatic registration.

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