Oh wow, I can see how my syntax has cause this miscommunication. I meant that the EEPROM can store the data after the Arduino loses power - similar to a traditional hard disk.
I have decided that probably the simplest way to count this data though is by using the following few very simple lines of code so that I can view the results just by starting up Serial Monitor and checking each of the LDRs still works at the end of the day, which will be common practice anyway:
Declaring val:
int val [numberOfSensors] = {
0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
Creating separate cumulative totals after the 'if' covered in the same breath as operating the counter:
val[i] = val[i] + 1;
And finally printing this information when it changes at the end of the 'for':
Serial.print ("So far, the amount of people who have sat on seat number ");
Serial.print (i);
Serial.print (" is ");
Serial.println (val[i]);
Easy peasy, and all I have to do i wave my hand over an LDR to check its current cumulative total.