Firstly, before SGPC made Anand Karaj act, or Anand marriage act, many sehajdhari sikhs practised their own cultural marriages. I beleive it was firstly the original Nirankari sect to introduce Anand Karaj to sehajdharis, and then SGPC made the nirankari style as the mainstream style. However, also I have read that this style goes in the opposite direction the the original nihang khalsa style.
Reference:: Sikh Philosophy Network http://www.sikhphilosophy.net/showthread.php?t=22754Reference:: Sikh Philosophy Network http://www.sikhphilosophy.net/showthread.php?t=22754
Since Anand Karaj is openly available for everyone these days, then we might as well take advantage of it
In regards to marriage, a marriage is usually accepted as long as it happens in front of family.
But I have seen types of marriages in music videos and dramas, and maybe based on old love stories where the couple have got married away from their parents, secretly.
For example, they go into the mandir, and in one scenaraio a couple put hars (the india necklace type thing) onto each other and accept each other as husband and wife.
I also saw a scene where the couple were in a Shere wali mata mandir, and the man put the red mark on the woman's forehead (I believe it is called sindoor) and they accepted each other as husband and wife.
So is it acceptable if 2 people accept each other as husband and wife, then the rest of society will recognise them as married?
Also, as we see in modern society, couples accept each other as partners, but instead of accepting themselves as married, they call themselves boyfriend and girlfriend instead? So in a society that can accept bf-gf relationship, then I think any form of marriage should be acceptable (maybe to the discretion of the parents), even if it lacks any ceremony. Because I choose to respect a couple who call themselves husband and wife.