Hi Urgan
I recently visited Amritsar for a day, if you can check my profile.
As everyone is saying, especially there are 3 things to visit in Amritsar- Golden temple, jallianwala bagh, wagah border.
For wagah border I believe on the eve of republic day, you need to reach there couple of hours early, as there will be heavy crowd on that day and to sit on first row you must go 3 hours early.