Funerals are a "funny thing" (I dont mean funny ha ha funny).
I have been to quite a few over the past few years - mainly due to the fact my father passed away (its getting near 8 years now) and he had about 800 people come to his funeral - I feel an obligation to repay that respect to many of the people that came to my father's funeral.
Personally I try not to make a big thing of it - I attend the church and find a place in the church - it is usually up the back because I feel I dont want to take up a place that could be reserved for closer family or older people that actually need a seat because they are infirm etc.
I do try to make sure that I pay my condolenses and respects to the family (us Greeks do it by actually passing by the casket at the end of the service in the church and shaking hands with the family), this is an ordeal for the family can take up to 1 hour after the service has concluded.
I am not making excuses for people that sit up the back of a funeral - but perhaps the Carlton people felt a bit awkward and were not sure of the protocol in this case. But if they took the time to ask someone prior to the service they could have actually presented a wreath near the conclusion of the service. They could have liaised with the funeral director about this who would have sorted it out with the Church.
This may have actually occurred (as I was not there

) but I am just pointing it out in case it didnt happen.