Some commentators have said that this wind of the Holy Spirti was not just the gentle breeze. The Holy Spirit was making himself known. It was the sound of "a train going by"... that is, not quiet.
Tongues was not limited here, as the "gift of tongues" would be (see 1Co 12). Here everyone that believed received the Holy Spirit, and as a sign, spoke in other tongues.
Paul talks about speaking in the "tongues of men and of angels" but clearly here, those that spoke in tongues ware clearly a sign to, and understood by, the non-believing Jews that were present.
8Then how is it that each of us hears them in his own native language? 9Parthians, Medes and Elamites; residents of Mesopotamia, Judea and Cappadocia, Pontus and Asia, 1 >0Phrygia and Pamphylia, Egypt and the parts of Libya near Cyrene; visitors from Rome 11 (both Jews and converts to Judaism); Cretans and Arabs-we hear them declaring the wonders of God in our own tongues!"
Not sure about this. Why would the non-believing crowd think that they were drunk? Yes, they were probably in the middle of a feast and wine was available, but it was only 9am. What about their actions made the non-believing crowd think that they were drunk.
The last time that it is recorded in the Bible that anyone "cast lots." Used to determine the will of God. Of course we now have the Holy Spirit to guide us.