Spelling protocol (American/British/Canadian) for an International conference

If I'm a Canadian who'll be presenting in an international conference, should I use my country's spelling, which is the Canadian/British spelling like "grey" or the more used American spelling like "gray?"

We also have our own unique spelling for some words, like "centre." I know Americans spell it "center" and I think the British spell it like the Americans.

Things to keep in mind:

• I don't know the distribution of the audience.
• The conference will be held in Germany, which isn't an English-speaking country itself.

Is there a protocol for these sort of situations?

P.S. This is a science conference, but I'm curious if a certain protocol exists.

Solution 1:

If you are Canadian, then people will expect you to present using Canadian spellings. Use the system you are comfortable with.

Solution 2:

Of particular relevance is the fact that it is an international conference.

Your objective should be to reach out to as many of the delegates as possible with one version.

Your options in order preference would be:
1. If the conference organizers have a style guide of any sort, follow it by all means.
2. Else, ask if they would like to recommend/ suggest.
3. Failing which, follow the most widely respected and authentic neutral references. Avoid exclusive BrEng/ AmEng dictionaries.
4. Depending on your domain, there could be a geographic majority. If necessary, address it.
5. Check out all other constraints.
6. Finally, go for the version you are most comfortable and strongest in.