Well, it's actually not beyond these people to have handed you some beer while you've been standing out there in the hot afternoon sun. If the Innkeeper didn't bring any, the people whose house this is would definitely be interested in sharing out their homebrewed stuff.
So if you want to be standing there investigating with a mug of ale in your hand, that's 110% possible.
Get Lucky rolls are fine by me, even with my lousy luck. Lukacs used up all his luck in the war, that's how he managed to survive as a twenty years man.
The stroll with the innkeeper sounds like a plan. Lukacs doesn't usually drink on the job, but he will have a small sample at each place they stop since it's the last (planned) job of the day. He'll be honest about the quality too. It might ruffle a few feathers if he doesn't like one, but he'd rather get a reputation for honesty.
Are you done for now with the snails and the evidence in the mortuary? Do you want to a) visit the Innkeeper's garden or the Mayor's garden, b) skip ahead to the evening beer stroll, or c) do something else?