I've never been to a psychic festival before but that sounds like it would be something fun to do.

>Does anyone else get overwhelmed at these things? I did my best to shield but some of it was still making its way through and I got dizzy a few times.

Large groups of psychic/magical individuals is a mixed bag for me.  On the one hand it can be overwhelming, especially if there isn't a lot of synergy present.  On the other hand, I find the more gifted individuals reside in one are the easier it becomes to influence the universe and effect magical changes.  If you ever want to see synchronicities go off like crazy just stick a bunch of such individuals in a room together.

I will say that the one time I got a tarot reading done by a fortune teller, it was such an unusual result that it kind of freaked her out.  I'm like 90% sure she wasn't intuitive and was merely bluffing (I sort of had to guide her through the reading) but it was interesting none the less, and it reaffirmed my faith in tarot cards as esoteric measuring sticks.

Also, every once in a while on Reddit I'll be approached by an intuitive with some real interesting insights.  It doesn't happen all that often but when it does I'm glad for it.