My parents have senior tickets and sometimes don’t go to games due to holidays / sickness etc.
If this happens I always offer the ticket out so occasionally an adult will be using a senior season ticket. It happens, doesn’t mean we are all after cheating the club out of money.
Next time, if we have to go to the ticket office and upgrade then so be it and although as the ticket had been already purchased and for the right reasons, I don’t see the issue.
If an adult buys a senior / child ticket on purpose then of course there is an issue.
Same, family have 3 ST's (one adult, two senors).
When they can't make it, I'll often take a friend to the game so I'm not sitting on my own. I don't really see how it's an issue for the occasional game (and also trying to convert a man city fan to the proper sky blues).
For me personally I'd rather there was a bum on the seat as the ticket has already been purchased.
I was asked to show my ticket getting in last week and when I pulled out the ST card, they didn't even look at it, just waved me on.
I didn't know there was a topup option and if it's an adult trying to get away with cheating the system, then it's a different matter entirely in my opinion.