People frequently ask me, "Where can I go on a traditional Catholic retreat with a sound retreatmaster and the TLM?" There are not a huge number of options but one of the very best options out there is Edelweiss. Highly recommended. Below are the 2025 retreats. More info here: https://edelweisshouse.org/
Also bear in mind the retreats offered in Ohio by the Benedictine monks of Tasmania (see here).