A few of the cons I have attended (Thought Bubble, MCM London, LFCC) have quiet rooms for folks who need a break and/or are a bit overwhelmed by the crowds. But I know that still doesn’t make them an easy trip for you!✨ though maybe Thought Bubble would be the one I would recommend >

Since it’s the smallest in size, while also having the highest concentration of comics people and being -fairly- accessible. But still: planes and covid and people (even if way less than those other big cons like SDCC or MCM).