You can request that they place your wiki in an earlier batch but that is not a guarantee they will do it. Honestly, I don't understand why some users are in such a rush to convert to UCP. If the reason is you want to get used to UCP, then you can just use Wreck-It Woodhouse Wiki to test things.
Next week is holiday, but if you sent it last Tuesday, it is bound to be replied to before the weekend. If they don't, it might take up to Wednesday/Thursday next week due to national holidays.