jean, just a note, what ever you prefer, please take into account your parents and his parents opinion on what they will like.... cos a wedding is not just the 2 of you, it also involves 2 families.....
if you have a cosy, small sit down dinner, still possible to mingle with guests.... my dream wedding was a small garden affair...but now is a 35 table formal chinese dinner, after the parents input....
for garden wedding, i like halia, Au Jardin, secret garden, jewel box....they do both buffets or sit down dinners... maybe you can consider long tables instead of round table settings... also...