Errr, no. You have access to the F lounge as a departing passenger, provided there is one where you depart. There is no F lounge in the domestic concourse. For a domestic departure, you do not have access to the international satellite or lounges, as I said above.

As for "from reading here", you *chose* to believe, and "like", the two posts above that agreed with your belief, despite the fact they were corrected by other posters. As is stated above, nowhere does it state that the MH Plat lounge is an arrivals lounge. Oneworld, as you will know from reading the site, does not have reciprocal arrivals lounge benefits. Many moons ago, pre-MH being in OW, it *used* to be an official MH arrivals lounge that could be used when arriving on MH flight; this is now an unofficial benefit, and certainly does not apply to arrivals from other airlines.

Therefore, while it's fine to ask politely if you may have admittance, you should not have been surprised or offended if they said you did not. As far as they're concerned, given you were on a cheapo separate domestic ticket departing KUL, rather than through-ticketed on MH, you were in the wrong part of the airport, and I would expect the BA T5 FLounge to say the same if you turned up with a BA boarding pass departing T3.

Malaysians may be polite, but, like Thais, they also like rules and stick to them.