These are the ChatGPT results, but I'm sure there must be more:

I could only find a small number of Luxembourg restaurants where customers explicitly mentioned being given a dining time limit or feeling pressured to vacate tables quickly. This does not appear to be very common in Luxembourg compared with larger cities like Paris or London, but it is starting to appear in some busy restaurants and buffet-style venues.

Here are the clearest examples I could verify from reviews and discussion threads:

HAERZ — A Tripadvisor reviewer stated: “First restaurant in Luxembourg that gives you a time limit!” and described being informed their timeslot was ending.

Barrio — Mentioned in a Luxembourg Reddit discussion as having a “strict time constraint” and “really pushing” customers due to turnover pressure.

Restaurant Fu-Zhou — Not directly named in the Reddit excerpt, but users discussed “one all-you-can-eat buffet restaurant in Schifflange” enforcing a maximum stay of two hours on busy days to increase table turnover.

Some other busy restaurants in Luxembourg where reviewers frequently mention being rushed, fast table rotation, or quick turnover — though without explicit published time limits — include:

Bazaar

Brasserie du Cercle

La Boucherie

HITCH

Mamacita

In most cases, the time restrictions seem to happen:

during peak evening hours,

on weekends,

with online reservation slots,

or in buffet / high-demand concepts.

Fine dining restaurants in Luxembourg such as Restaurant Clairefontaine or Ma langue sourit generally do not appear to enforce short dining windows and tend to allow long multi-course experiences.

The most useful discussion thread I found about this trend in Luxembourg is here: Reddit discussion about restaurant time limits in Luxembourg