Day pass rego.

[homegrown]

Hi had a question for people who have used the day rego pass before and if they had any troubles getting one.
This is just from my experience but needed to use the car in the past for a wedding and copped the third degree about getting a day pass and taking advantage of this service. At first they were trying to get me to register my car on the Friday use it on the weekend and cancel the rego on the Monday. More money for them. Then the second bit. I understand mentioning the word wedding wouldn't have gone too well and a list of rules would apply. Though eventually I did get that day pass
But there is an event I would really like to try enter and would like the transition to go a bit more smoothly this time.
So just wondering does everyone cop a 3rd degree trying get this and what excuse have they used it for? Thanks