Not sure if possible. For active guild play at least.
Same. Though I saw some really desperate parties in shout. Anyone with Barrier scrolls who can follow a party will do, I guess.
When I use my “I cannot speak Japanese” macro they are usually ignore or write smth like: “OK”, “www”.
When I automatched my Squire (insane blessing made him useful) with even more OP fencer to clear 170 dungeon I wrote: “Need bless, brb.” after clearing like 1/3 of that dungeon before going to the town and “Now you can re-bless too” after reentering. And then after 2/3 again. We just waited for each other.
Same in 260 with my Mergen who was the main DD w/o healer this time: “Brb blessing”. They waited for me and we continued to clear the dun when I came back :3.
Just have a macro in Japanese and use simple english words. And don’t use it in shout.