How do act when meeting skaters in public

So I’m going to US Nationals since it’s in my hometown, and last night I went to a Junior competition and I saw Maria Nagasu and Karen Chen watching as well! I wanted to say hi but I also didn’t want to overwhelm or distract them (even though their competition is Wednesday). But now I’m kicking myself because they were like 5 ft away from me and I said nothing! So idk, what’s the proper protocol?