It's my mother's 80th birthday next month and my sister and family will be in town to celebrate on a Saturday night. We're a party of 10, which includes two grandchildren under 8 but the rest are adults or have adult palates/appetites. My mother's first choice was Origins Thai in Somerville, but they can't manage a group of that size on a Saturday night. We're all adventurous eaters, and with small kids someplace not too upscale would be best. Any suggestions?