HI Greg...i have been doing bridal shows, big & small for about 9 years and Ive always had great success..even at large shows where photographers are in abundance.
#1 thing...people LOVE to look at pics...not just some big framed prints...you want them at your table LONGER, so you can talk to them....i keep about 4, 8x10 albums on the table and as they are walking by, i invite people to 'stay a while and have a good look'....keeps them at the table while i do my 'spiel'....(does help that i was great in sales in my 9-5 days). Just give them LOTS to look at. I find that because people are spending time looking thru albums, they dont really notice the big prints as much though....so i dont do tonnes of 16x20's, just 2or 3 on easels at the side and behind my table. I keep several 8x10's framed on the table....all in black frames by the way, with black albums....keeps things neat and 'pops'.
My booth setup is just a long table with pale green table coverings, and then all the black frames/albums.....my easels are black also, which are behind and at the side of the table... i stand behind the table to talk and hand out brochures, keeping the viewing area free for lots of brides.
I hand out business cards to those who are 'passers by', who likely arent interested at all, but they still have my name, IN case. I give out brochure to anyone i talk quite a lot with and the 'somewhere in between' I hand out a collage 4x6 black and white, with thumbnails and all my contact info....those 4x6's are fantastic!!!!!!!! ( i hand out the different stuff for cost management...brochures get expensive!)
some bridal shows i am required to give a token gift to each bride...i used to give fridge frames with my business card inside, but now I have changed to chocolate bars (aero bars seems to be the best price for all chocolate) and i put an over wrap with a tranparent pic and all my contact info and 'congratulations on your engagement'..... the nice thing is, who is going to throw away a chocolate bar???? you know your money istn wasted...its totally clever...i get lots of feedback on it too!
OHHH, when you are chatting away at ;your booth...what to say? YOu will repeat yourself a million times over....tell them your best attributes, what they get when they book you..if you have different price points, say wedding coverage starting at ????
good luck with the show!