The main thing to remember, is that if something is wrong, complain immediately, both to the reception, and the rep, and do not be put off.
If it looks like nothing is going to be done, become a nuisance - I don't mean shout & swear, but be polite and firm, and nag them until they sort any problem out, then when they do, thank them.
Don't sit there getting worked up over a problem for days, get it sorted immediately.
I've known people to moan to other holidaymakers all week that their room isn't being cleaned for example, yet they have not complained once to the staff or the rep - if they don't know it's a problem, they can't fix it.
Also, people have different tastes, what one person enjoys, another will hate, and vice versa.
Hope you enjoy it, and I look forward to seeing a review as to how the place is this year, as we're thinking of returning in September