I am a married Iyer woman so I know how an Iyer marriage goes.
If all the rituals and customs are properly followed an Iyer marriage will be for 5 days.
Iyengars have same 4-5 days! I should say 'had'; who has got the time these days!
I was very surprised to find (when I was in Chennai) that they conduct the 'Reception' before actual wedding!!!!
But for comparing them, one should know both the things. As far as I know,
an Iyengar bride sits on the lap of her father who sits on the stage, and Iyer bride also sits on the father's lap but father sits on a chair which is covered with a Silk Veshti.
This is exactly the same in Iyengar weddings; except it is on the stage where the wedding is conducted (but this was same in Iyer wedding also).
And whenever the bride or groom or both do Namaskaram, Iyers do it once, while Iyengars do it 3 times.
Wrong! Iyengars always do it either 2 times or 4 times; never in odd number. Also, Iyengars say 'sevikkirathu', not 'Namaskaram'.
"During bandhi, saadam podamatta, but sadatha "kuthuva", there will be no rasam but "shathumadhu", there will be no poriyal but "karamadhu""
See Bhooma's comments
The "kuththuva" term is associated with any liquid food item. Iyers start serving with Payasam. Usually they don't serve salt.
Iyengars start by serving sadham ordinarily. But in functions and feasts, they start with sugar, banana first followed by paruppu; then saadam.
The serving person in Iyer side will ask "innum konjam rasam podattuma or innum konjam venuma". But in Iyengar side, it goes like "innum konjam saathamudhu kettukkarela.."
For "saappadu" or "saadham" they will say "thaligai".
Even the method of wearing the Madisaar pudavai is also different. The thalaippu of the pudavai is put in the right side in Iyers but in left side in Iyengars.
This is what I've observed. But one thing I can say confidently. The "Puliyodharai" prepared by Iyengars is very,very tasty.
I completely agree; nothing like Iyengar "puliyodharai"!! ; please also add Iyengar "Sarkarai Pongal"!
I am eager to know the basic differences from experts