As the other thread is a bit long and arduous to read through and the state of affairs regarding the ticket have changed... An Update.
Family groups and students (less than four people) will not be charged a ticket to walk in the old town.*
The ticket price for foreigner is 120,000vnd - which allows guided entrance to five vestiges of interest in the old town.
The price to domestic travellers is 80,000vnd and allows access to three vestiges of interest.
The ticket is valid for ten days.
Proceeds from the ticket go towards renovation work to the old town (at debated percentages - but approx 80% reinvested).
The ticket will be replaced by a pin on tag (so you don't forget it).
*subject to confirmation from the peoples committee press conference tomorrow - 26/04/2014.
The entrance ticket crackdown was a 'pilot scheme' to reduce losses. It has been admitted that there was a bit of mismanagement, lack of information and confusion. Security staff have not behaved well.