lol! well, this is why running a relay is nice. in this case with relay.tools there isnt a traditional rate limit (because i try to never limit by IP). the limit that can hit first is the CPU usage of event parsing for the access control list (spamblaster). so it should process just fine, just may slow things down while it processes.
one trick that could help, if youre worried your uploader wont know if the events made it would be to load it onto a local strfry, and then run negentropy sync. that would be kindof like an rsync, run it a few times and then itll fully sync if some events didnt make it the first time.