You won't need signing in be we need to see your vaccination certs.

After the game or even before if you can, get yourself down to soccer sensations where there is live entertainment from 11 am onwards including after the game.
Prices are also cheaper than the bars at Rovers, plus just in case you are hungry, they (soccer sensations) are doing a pint and a sausage sarnie special for £3, 10.00am onwards.

Cheers I think mate, think they are posh (for Rovers fans) and prefer the main bar, is it in the West sand or the North?

I also choosing to be the bigger person and ignore Stan's comments.

I'd say the most 'traditional' bar at Rovers is the Robins Nest (it's been open much longer than the East Stand bar anyway). This is situated under the Roger Millward Stand (or whatever it's called these days!), to the left of the player entrance if you're stood in the car park facing the stand.
I've not been in for maybe three or four years, but last time I did it had gone from been RSG members or pass holders only (can't remember which) to open access, but obviously you're best checking more officially if possible e.g. ring the club.
I'd say you'll be made much more welcome in Hull colours in the Robins Nest than the East Stand bar without a doubt. There is also the Harry Poole bar upstairs in the West Stand and Flannagan's Bar I think, but I know very little about these unfortunately.
So basically, I'd opt for the Robins' Nest if I was yourself, but phone the club first and check it's still open-access.

Just realised, there is also a North Stand bar of course nowadays. This will probably be good if you're going in that stand as a Hull fan, but if your Rovers mates are going elsewhere (e.g. the Main Stand seats) the Robins' Nest is probably still a good option. I've been in there before on derby day I'm sure, and it's always been very welcoming to fans of other clubs too.

Wonder if the chavs in the South stand can manage to behave this year. Depends on the result I suppose.

Hull FC - Official Facebook Page

It's official! We've now broken the record for the most away fans at a Hull KR fixture at the KC Lightstream Stadium! Could be plenty more too as Hull KR have agreed to open a cash turnstile at tomorrow's game. Let's raise the imaginery roof and get behind the boys! Thanks for your fantastic support ‪#‎BlackandWhiteArmy‬

Looks like its going to be a great atmosphere

A full line of heavy handed stewards in front of the South Stand should be mandatory for this fixture.

Dont worry it will be if not we will on sight any body who misbehaves

Why don't you meet your mates in the 0 - 50 bar?

Why don't you get some new material.

Does Allam allow you to name a bar at your place???

There not allowed to open all the bars never mind name them