Keep in mind that Kel'Block is not speaking "officially" for Blockoworld, nor Vokor.
A word of advice; don't build the con center until all booths have been submitted. This is how i suggested tomthegeek do it for three years and he ignored me every time.
Process goes like this;
Step 1; announcement of booth guidelines and due date.
step 2; due date. any booths not turned in at this point are disqualified
step 3; con center construction. build around the booths you have, and lay them out in a logical order
The current plan is to at least do the registrations before the center is opened. However, I don't think it would be possible to wait for all booths to be constructed before making the con center (since that is usually the bottleneck).
Is Vokor still a thing on Blockland? If so is it going to have a booth?
Vokor has recently been very inactive (arguably, it has never been very active), because of a variety of factors, including that Munk has lately been quite occupied with RL matters until very recently.