You will love it. I sat with the Dundee United fans for last years semi final. Few mates at work are Dundee united fans and i was going to go again this year, but had a golf day at Turnberry booked already.   
I will go to the final if Dundee United win (i think they will)   
FTD! Youll hear that a bit (they sing it alot) basically its f6ck the D (Dundee)   
Rangers fans will fill the ground, they are still getting 40,000 in scottish league 1/2   
Ibrox isnt the best part of town, but if youre coming into central station, you can get a train to Partick and then get the underground (clockwork orange) to Ibrox    
Have a night out in Glasgow if you can, the people are very very friendly.