Yes they can
I will not make any comment with regards to the security issue, however I understand that all of the other issues raised have been taken into account.
Handling agents are, I believe, bringing in - if required - additional equipment for the period in question. I also have heard that extra coaches are being hired for the occasion.
The proof of the pudding will be in the eating. There are certain people who seem to use this site for what appear to be political reasons to knock the airport. I am not employed by the authority and take no sides, however I have seen the airport grow from the days when I was a kid and visited in the mid-1950's. If the authority screws up then let the people responsible have egg on their face and face the wrath of many people. If all goes well then give credit where credit is due.
Lets think positively and try to make the day as smooth as possible for all those who will be passing through the airport.
Cheers
Scottie Dog