Excessive National Day Parade Rehearsals??

I wonder how much does each parade rehearsal cost? How much does it cost to have thousands of security, medical staff, fighter planes and helicopters, floats, and volunteers etc? It must be expensive.

There has been a rehearsal almost every Saturday for the National Day Parade for over a month. The rehearsals are full dress rehearsals too. Everyone is in full costume, the military is everywhere, and the public bus routes are changed from 6 am to 11 pm on Saturdays.

I have never heard of any country rehearsing this much before. I think it is a bit extreme. How many rehearsals are enough? Haven't the organizers worked out the potential problems yet?

I am glad to see Singaporeans excited about something and taking pride in their country. But really....wouldn't just one rehearsal have been enough???

I know it's the 40th Annniversary of Singapore, but still.....